NCERT Solutions For Class 7 Maths Chapter 11 Perimeter and Area Exercise 11.1

Table of Contents

Class 7, Maths, Chapter 11, Exercise 11.1 Solutions

Q.1. The length and the breadth of a rectangular piece of land are 500 m and 300 m respectively. Find

(i) its area

(ii) the cost of the land, if 1 m² of the land costs ₹ 10,000.

Q.2. Find the area of a square park whose perimeter is 320 m.

Q.3. Find the breadth of a rectangular plot of land, if its area is 440 m² and the length is 22 m. Also find its perimeter.

Q.4. The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth. Also find the area.

Q.5. The area of a square park is the same as of a rectangular park. If the side of the square park is 60 m and the length of the rectangular park is 90 m, find the breadth of the rectangular park.

Q.6. A wire is in the shape of a rectangle. Its length is 40 cm and breadth is 22 cm. If the same wire is rebent in the shape of a square, what will be the measure of each side. Also find which shape encloses more area?

Q.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.

Q.8. A door of length 2 m and breadth 1m is fitted in a wall. The length of the wall is 4.5 m and the breadth is 3.6 m (Figure). Find the cost of white Fig 11.6 washing the wall, if the rate of white washing the wall is ₹ 20 per m².