Question 7 - Square and Rectangle - Chapter 9 Class 7 Perimeter and Area

Last updated at April 16, 2024 by

Ex 11.1, 7 - The perimeter of a rectangle is 130 cm. If the breadth

Ex 11.1, 7 - Chapter 11 Class 7 Perimeter and Area - Part 2

Transcript

Question 7 The perimeter of a rectangle is 130 cm. If the breadth of the rectangle is 30 cm, find its length. Also find the area of the rectangle. Length of rectangle = l = ? Breadth of rectangle = b = 30 cm Given, Perimeter of rectangle = 130 cm 2 (l + b) = 130 2 (l + 30) = 130 l + 30 = 130/2 l + 30 = 65 l = 65 − 30 l = 35 cm ∴ Length of rectangle is 35 cm Now, Area = l × b = 35 × 30 = 1050 sq. cm. = 1,050 cm2 ∴ Area of rectangle is 1050 cm2

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.