Question

A play ground is 38 m 50cm wide.
Find:
(a) The cost of levelling it at ₹40 per m 2.
(b)The number of rounds along the boundary one should take to run 2 km

Maths question

please answer

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Answer 1

Answer :

Given length of ground = 38 m

Width of Ground = 50 cm = 0.5 m

As the ground is a Rectangle so,

Area of Rectangle = Length × Width

Area = 38 × 0.5

=> 19 m^2

a) Given cost of levelling per m^2 = ₹40

Then, Cost of levelling 19 m^2 = ₹40 × 19

=> ₹ 760

b) To find the number of rounds along the boundary, the perimeter of ground is needed.

Therefore,

Perimeter of Ground = 2(L + W)

=> 2(38 + 0.5)

=> 2 × 38.5

=> 77 m

Number of rounds one should take to run 2 km

=> 2 km = 2000 m

=> 2000 m ÷ 77 m

=> 25.9 rounds

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