Rd Sharma Class 8 Chapter 13.2

[Venice Sassone]

Studentswho aim to score high marks in their board exams should practise RD Sharma Solutions without fail to understand how the concepts are solved. Practising on a regular basis helps in building time management skills and also speeds up the method of solving problems. Download the PDF of RD Sharma Solutions for Class 8 Maths now and start practising offline.

Students can refer to RD Sharma Solutions Class 8, which is the best reference material developed by our expert tutors to gain knowledge and good command of the subject. Solving these exercises in each chapter will ensure that students can obtain good scores in their exams.

Chapter 1 of the RD Sharma textbook deals with Rational Numbers and their properties of addition of rational numbers, subtraction of rational numbers and its properties, simplification of expressions involving addition and subtraction of rational numbers, multiplication of rational numbers and their properties, division of rational numbers, representation of rational numbers on the number line and rational numbers between two rational numbers are discussed.

In Chapter 2 Powers, students get to learn various topics like negative integral exponents, decimal number system, laws of integral exponents and the use of exponents to express small numbers in standard form.

Chapter 3 Squares and Square Roots of RD Sharma Class 8 Maths gives an account of the various topics like a square of a number and square numbers, properties and patterns of some square numbers, some short-cuts to finding squares (column method, visual method, diagonal method), square roots, square root of a perfect square by prime factorisation, the relation between the digits of a perfect square and its square root, square roots of perfect squares by the method of long division, square roots of rational numbers in the form of fractions, square roots of rational numbers in decimal form and approximate values of square roots by using square root tables.

In Chapter 4 of the RD Sharma textbook, we shall see cube of a number and perfect cube numbers, properties of cubes of numbers, finding the cube of a two-digit number by column method, the cube root of negative integers, cubes of rational numbers, cube roots of rational numbers, cube root of a negative integral perfect cube, and the cube root of the product of integers and finding cube roots by using cube root tables.

Chapter 5 of the RD Sharma textbook provides numbers in generalised form, interchanging the digits of a number, various tests of divisibility, like divisibility by 10, 5, 2, 9, 3, 6, 11, and 4 and cryptarithms, are discussed in this chapter.

Chapter 6 of RD Sharma Class 8 Maths discusses the topic of Algebraic Expressions. Students get to learn about addition, subtraction, and multiplication using monomials, binomials performed and division of algebraic expressions. An identity is equality, which is true for all variables, is a topic also included here. This chapter also deals with the applications of those special identities or products. Here, we have given exercises with solutions based on these topics from the chapter.

This chapter is about Linear Equations by using a few rules, which deal with solving equations having variable terms on one side and numbers on the other side, the transposition method for solving linear equations in one variable, the cross-multiplication method for solving equations, and lastly, the applications of linear equations to practical problems.

In Chapter 10, we shall learn the concepts of direct and inverse variations, which are very useful in many ways. We mainly learn about types of variations (direct variations, inverse variations) in this chapter.

General rules such as (i) suppose A can finish a work in n days. Then, work done by A in one day is 1/n. (ii) suppose that work done by A in one day is 1/n. Then, the time taken by A to finish the whole work is n days. By using such rules, we can solve problems based on pipes and cisterns, which are given in the RD Sharma Class 8 textbook.

This chapter is about Percentage, and we will review the topics discussed in Class 8 and solve more problems based on them, which are provided in the RD Sharma textbook. Here, we have compiled the solutions to exercises from this chapter which are provided in the below links.

This chapter deals with the computation of profit and loss incurred in buying and selling goods. By reviewing the basic facts and formulae studied earlier in Class 7, we shall implement those formulas again in this chapter, along with the advanced concepts mentioned, i.e., discount, sales tax, and value-added tax (VAT).

In the previous class, we learned about simple interest and the formulas to calculate simple interest and amount. In this chapter, students are introduced to Compound Interest. The concept covered in this chapter is to compute the compound interest when interest is compounded annually, half-yearly and quarterly by using formulae. Meanwhile, in this chapter, students are introduced to concepts related to inverse problems on compound interest, population growth-related problems and depreciation.

Chapter 15 of RD Sharma Class 8 Maths deals with the topic of shapes. In our day-to-day life, we come across various plane surfaces, such as the top of our study table, the blackboard in a classroom, etc. All these shapes related to polygons will be discussed in this chapter.

In previous classes, we have learned the angle sum property of a triangle. The sum of the interior angles of a triangle is 180. In this chapter, we shall learn the angle sum property of quadrilateral and other polygons. Some topics discussed in this chapter are the interior and exterior of a quadrilateral, convex quadrilateral, interior angle sum property and exterior angle property.

In the previous chapter, we learned about a quadrilateral in general. In this chapter, we shall learn about some special types of quadrilaterals and their properties. Various types of quadrilaterals, such as trapezium, parallelogram, rhombus, rectangle, and square, along with their properties, are discussed.

Chapter 18 mainly deals with the construction of quadrilaterals since, in previous classes, we have studied triangles and their constructions. Construction of quadrilaterals includes when four sides and one diagonal are given, when their three sides and two diagonals are given, when their four sides and one angle are given, when their three sides and their included angles are given, and when their three angles and their two included sides are given.

In this chapter, we will discuss the visualisation of 3D shapes from their plane figures. We will also learn about the representation of three-dimensional shapes on the plane of the paper. Topics mainly include polyhedra, prisms, pyramids, platonic solids and the visualisation of 3D shapes through nets.

Earlier, we learned about perimeters and areas of various plane figures such as squares, rectangles, parallelograms, rhombuses, triangles, etc. In this chapter, we will study methods of finding the area of a trapezium and also problems finding areas of some polygons by using formulas.

In Class 7, we visualised some solid shapes, including a cuboid and a cube. In this chapter, we shall learn about the volumes and surface areas of a cuboid and a cube. The formulae for the same will also be derived. Topics discussed in this chapter are the volume of the space region formed by a body, a standard unit of volume, the formula for finding the volume of a cuboid, the volume of a cube, other standard units of volume, surface areas of a cuboid, and a cube and surface area of the walls of a room.

As the chapter is about circular cylinders, we shall discuss problems to find the surface area of a right circular cylinder, the surface area of a hollow cylinder, the volume of a cylinder and the volume of a hollow cylinder.

The word data means information. So, in chapter 23, we shall see how to present the data and calculate the frequency distribution related to the given data. There are two types of frequency distributions (i) discrete frequency distribution and (ii) continuous or grouped frequency distribution. We shall also learn how to construct a discrete frequency distribution as well as grouped frequency distribution.

In previous classes, we learned how to draw bar graphs to represent the frequency distribution of ungrouped data. In this section, we shall learn how to represent a grouped frequency distribution graphically. The most common graphic representation is the histogram.

In previous chapters, we learned about the classification and tabulation of data and their graphical representation by using histograms. In this chapter, we shall learn about the diagrammatic representation of data. We will discuss a particular type of diagram known as pie diagrams, pie charts or circle graphs to represent the data. Additionally, a reading of pie charts is added in this chapter, where we shall see how the desired information can be ascertained from a given pie chart.

Students can learn the concepts related to probability in this chapter. Probability is a concept that can be learned from some experiments and their outcomes. Chapter 26 of RD Sharma Class 8 Maths also deals with some problems related to the probability of the occurrence of an event.

Chapter 27 of RD Sharma shall brief about the construction and reading of graphs. In order to draw graphs, we first plot various points, and then they are joined by a free-hand curve. So first, we shall learn how to plot points on a cartesian plane, and later, we will construct a graph.

RD Sharma Solutions for Class 9 Maths are available in PDF format, which can be downloaded effortlessly by the students. The chapter-wise solutions are prepared in a step-wise manner to boost the exam preparations of students. The main aim is to help students self analyse the areas which require more practice from the exam point of view. With the help of RD Sharma Solutions, students can solve the exercise problems in a shorter duration, with a clear idea of the concepts.

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