A gardener wants to fence a circular garden of diameter 21m . Find the length of the rope he needs to purchase , if he makes 2 rounds of fence . Also find the cost of the rope, if it costs rs 4 per metre
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13
diameter=21
radius=21/2
circumference=2pi r
2*22/7*21/2=66
for twice=132
cost=132×4=528
radius=21/2
circumference=2pi r
2*22/7*21/2=66
for twice=132
cost=132×4=528
vishalg32:
There are 2 rounds of fence so 66*2= 132m of rope is required and cost will be 132*4= 528₹
Answered by
16
radius of circular garden = 21/2
circumference of the garden = 2πr
= 2×22/7×21/2
= 66m
one round of fence = 66m
two round of fence = 66× 2
= 132 m
cost of 1 m of rope = rs.4
cost of 132m of rope = 4× 132
= rs. 528
circumference of the garden = 2πr
= 2×22/7×21/2
= 66m
one round of fence = 66m
two round of fence = 66× 2
= 132 m
cost of 1 m of rope = rs.4
cost of 132m of rope = 4× 132
= rs. 528
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