Question

The length and breadth of a playground are 70m*80cm and 42m*70cm find the cost of levelling it at the rate of rupees 2 per square meter also find the distance covered by a boy to take 3 rounds of the field

Answer 1

Length of playground 80m
breadth of playground 35m
Area of playground length× breadth
80×35= 2800msq
cost levelling= 4.50×2800
12600rs
Thus cost of levelling is 12600 rupees

perimeter of ground = 2 ( length +breadth)
2 (80+35)
=150 m is perimeter of ground
a boy run three times 150×3 = 450
time taken distance per second= 1.5m
450× 1.5= 675seconds
Thus he will complete in 675 second
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