Class 8 maths chapter 1 exercise 1.2 solutions

Class 8 Maths Chapter 1 (Rational numbers) Exercise 1.1 NCERT-class-8-maths-chapter-1-exercise-1. 1 solutions Class 8 maths chapter 1 exercise 1.2 solutions NCERT maths class 8 chapter 1  (Exercise 1.2)  1. Represent these numbers on the number line. (i)        (ii) Sol.  (i) To represent  the number line may be divided into four equal parts as shown  fig 1.  We use the number to name the first point of this division. The second point of division will be labelled , the third point , and so on . The point A will represent . (ii)  To represent  the number line may …

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NCERT-class-8-maths-chapter-1-exercise-1.1

Ncert Class 8 Maths Chapter 1 exercise 1.1 NCERT solutions for class 8 maths| Chapter 1 Rational numbers  A  detailed and step-wise solutions to all the questions at the end of the chapter from the NCERT Maths book   are given below: Ncert-class-8-maths-chapter-1-exercise-1.1 1. Using appropriate properties find (i) Sol.    =        (by commutativity) =            (by distributivity) = = =  (ii)   Sol.                       (by commutativity) = =  = = = 2. Write the additive inverse of each of the following:  (i) Sol.   is …

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Find the area of a triangle two sides of which are 18cm and 10cm and the perimeter is 42cm

Class 9  Exercise 12.1  Question 4 find the area of a triangle two sides of which are 18cm and 10cm and the perimeter is  42cm .  Solution:  Let and be the sides of the triangle  ABC. Here we have perimeter of the triangle    , and . First we will find the 3rd side of the triangle  by using perimeter,  then we will use  Heron’s formula  to find the area of the  given triangle. The Heron’s formula  for finding the area of a triangle  given by Area of a triangle =    where , and are the sides of the triangle …

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