6) What is the area of a square park whose side is 150 metres? Find the total cost of planting grass in it at Rs10 per square metre. 7) What is the area of a rectangular garden whose length is 50m and breadth 30.5m? If the cost of manuring the garden is Rs6.50 per sq metre , find the total cost of manuring the garden. 8) A hall is paved with 1 sq metre tiles. If the length and breadth of the hall are 15m and 10m, how many tiles are needed? If each tile cost Rs15.50 find the cost of tiling. 9) The base of a rectangular tank is 21.5m long and 10m broad. Find the cost of painting the base of the tank if the cost of painting is Rs 2.50 per sq m. 10) A hall measures 16m by 12m. How many square tiles of side 25cm will be required to pave its floor?
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Step-by-step explanation:
area of a square park whose side is 150 metres = 150 * 150 = 22500 m²
total cost of planting grass in it at Rs10 per square metre = 10 * 22500
= 225000 Rs
area of a rectangular garden whose length is 50m and breadth 30.5m
= 50 * 30.5
= 1525 m²
cost of manuring the garden at Rs6.50 per sq metre = 1525 * 6.5
= 9912.5 Rs
Times needed = 15 * 10/(1 * 1) = 150
Cost of tiles if each costs 15.5 Rs = 150 * 15.5 = Rs 2325
Cost of painting base = 21.5 * 10 * 2.5 = Rs 537.5
Tiles required = 16 * 100 * 12 * 100 / (25 * 25) = 3072 tiles
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Answer:
6.Area-22500
Total cost of planting grass is ₹ 225000
7.Area- 1525 sq.m
total cost of manuring the garden is 9912.5