Chapter 11 – Perimeter and Area
Assignment 4
Q.1. Find the area, in hectare, of a field whose length is 480 m and breadth 120 m.
Q.2. Find the area of a rectangular plot, one side of which is 40 m and its diagonal 41 m.
Q.3. The length and breadth of a rectangular piece of land are 500 m and 300 m respectively. Find its cost, if 1 m2 of the land costs ₹ 27000.
Q.4. Find the area of a square park whose perimeter is 480 m.
Q.5. The areas of a square and rectangle are equal. If the side of the square is 40 cm and the breadth of the rectangle is 25 cm. Find the length of the rectangle. Also, find the perimeter of the rectangle.
Q.6. Prateek wants to fence the garden in front of his house as shown in the figure on three sides. Find the cost of fencing at the rate of ₹ 220 /m.
Q.7. A wall 12.32 m long and 3.2 m high is covered with rectangular tiles of size 22 cm by 10 cm. Find the total cost of the tiles at the rate of Rs 25.50 per tile.
Q.8. Find the length of a wall in metres whose height is 5 m and which can be covered by 5000 tiles of size 30 cm by 10 cm.
Q.9. A tile measures 12 cm × 15 cm. How many tiles will be required to cover a wall of size 6 m × 4.5 m? Also, find the total cost of the tiles at the rate of Rs 45 per tile.
Q.10. A rectangular field is measured 260 m by 220 m. How long will it take for a jogger to go two times round the field, if he runs at the rate of 3.2 metre per second?
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