Questions and Solutions for NCERT Class 7th Mathematics – Chapter 11 – Perimeter and Area – Exercise – 11.1
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 m^2 of the land costs Rs 10,000.
2. Find the area of a square park whose perimeter is 320 m.
3. Find the breadth of a rectangular plot of land, if its area is 440 m^2 and the length is 22 m. Also find its perimeter.
4. The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth. Also find the area.
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.
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?
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.
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 (Fig11.6). Find the cost of white washing the wall, if the rate of white washing the wall is Rs 20 per m^2.
You can find the solutions for previous exercise from here
- Chapter 10 – Practical Geometry – Exercise -10.5
- Practical Geometry – Exercise -10.4
- Chapter 10 – Practical Geometry – Exercise -10.3
- Practical Geometry – Exercise -10.2
- Chapter 10 – Practical Geometry – Exercise -10.1
- Chapter 9 – Rational Numbers – 9.2
- Rational Numbers – Exercise – 9.1
- Comparing Quantities – Exercise – 8.3
- Chapter – 8 – Comparing Quantities – Exercise – 8.2
- Comparing Quantities – Exercise – 8.1
- Congruence of Triangles – Exercise – 7.2
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