a gardener wants to fence a circular garden of diameter 42m. Find the length of the he needs to.purchase ,if he makes 3 rounds of fence. Also find the cost of the rope,if it cost Rs 15 per meter
Answers
Answer:
Given,
Diameter of a circular garden = 42m
Radius(r) of a circular garden = Diameter/2
= 42/2 m
= 21m
By formula,
circumference(one round) of a garden = 2πr
= 2×22/7×21 m
= 2×22×3 m
= 132 m
Therefore, the length of the rope he needs to purchase, if he makes 3 rounds of fence = 132 × 3 m
= 396m (ans)
cost of 1m of rope = ₹ 15
cost of 396m of rope = ₹ 396 × 15
= ₹ 5,940
Answer:- The total cost of the rope is ₹ 5940.