Question

A playground is 70 m long and 30 m wide find tha cost of levelling at Rs. 15 per S m​

Answer 1

ANSWER:

We have,

Length AB = 40 m and breadth BC = 25 m

∴ Area of lawn ABCD = 40 m x 25 m = 1000 m2

Length PQ = (40 + 2 + 2 ) m = 44 m

Breadth QR = ( 25 + 2 + 2 ) m = 29 m

∴ Area of PQRS = 44 m x 29 m = 1276 m2

Now,

Area of the path = Area of PQRS − Area of the lawn ABCD

= 1276 m2 − 1000 m2

= 276 m2

Rate of levelling the path = Rs. 8.25 per m2

∴ Cost of levelling the path = Rs. ( 8.25 x 276)

= Rs. 2277

Answer 2

Answer:

$area \: \: \: of \: \: \: the \: \: \: playground \: \: \: = l \times b \\ \\ = 70 \times 30 \\ \\ = 2100 {m}^{2} \\ \\ so \: \: \: total \: \: \: cost \: \: \: = \: \: \: 15 \times 2100 \\ \\ = 31500rs$

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