a park is in the shape of a circle and a person walking on the boundary covers a distance of 440 m in one round . find the diameter of the park and also the cost of covering it with gravel at the rate of rupees 225 per m sq. with solve
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Answered by
4
circumference of park = 440 m
2 x pie x r =440
r = 70 m
diameter = 140 m
area = pie x r^2
= 220 m sq.
cost of covering gravel at 1 m sq. = 225 rupees
cost of covering gravel at 220 m sq. = 220 x 225
=49500 rupees
Answered by
33
circumference of park = 440 m
2 x π x r =440
r = 70 m
.'.diameter = 2*70 =140 m
area =πr²
= 22/7*70*70
= 15400 m²
cost of covering gravel at 1 m sq. = 225 rupees
cost of covering gravel at 220 m sq.
= 15400x 225
= RS. 3465000
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