A gardener wants to fence a circular garden of diameter 21 meter. 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 cost Rs 4 per meter. (Take \pi = 22/7
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Answer:
In ΔAOB,O is right angle.
∴ Applying Pythogorus theorem,
(AB)
2
=(OB)
2
+(OA)
2
=9+16
(AB)
2
=25
AB=5
∴ He is 5km from starting point.
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A gardener wants to fence a circular garden of diameter 21 meter. 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 cost Rs 4 per meter. (Take \pi = 22/7
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