Question 1: Find the length of the diameter of the circle whose circumference is 44 cm.
Question 2: A gardener wants to fence a circular garden of diameter 21 m. Find the length of the rope he needs to purchase if he makes 2 rounds of the fence. Also, find the cost of the rope, if it costs Rs 4 per metre.
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Answer:
Step-by-step explanation:
2πr = circumference
r = 44 × 7÷22
r = 14
d =2r
d= 28
d=21 r=21÷2
length of rope required = 2(2πr)
= 2×2×22÷7×21÷2
= 132m
cost = 132 × 4
= ₹928
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