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 rupees 4 . (Take π=22/7)
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3
Step-by-step explanation:
Circumference is pi *diameter
Therefore circumference is 66 m
Length of 2 rounds of rope is 66×2=132
Cost of rope =132×4=528 rupees
Answered by
3
Answer:
Diameter of the circular garden = 21 m
∴ Radius = 21 / 2 m
∴ Circumference = 2πr = 2×22 / 7×21 / 2
= 66 m
Length of rope needed for 2 rounds
= 2 × 66 m = 132 m
Cost of the rope = ₹4 × 132 = ₹ 528
Step-by-step explanation:
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