Question

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 4 per meter. (Take A =22/7)​

Answer 1

Answer:

Circumference = 66 m

Cost of Rope = 528 ₹

Step-by-step explanation:

Diameter = 21 m

Radius = $\frac{21}{2}$ = 10.5

Circumference = 2$\pi$r

                         = 2×$\frac{22}{7}$×10.5

                         = 2 × 22 × 1.5

                         = 66 m

Cost of Rope = 4(2×66)

                      = 4 × 132

                      = 528 ₹

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