Question

A gardener wants to fence a circular garden of diameter 21 m. Find the length wire he need to purchase and cost it at the rate of rs 4 per meter​

Answer 1

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₹ 264

Step-by-step explanation:

Diameter = 21 m

Radius = 21/2 = 10.5 m

Formula of Circumference of the circle = 2πr

= 2×3.14×10.5= 65.94 ${m}^{2}$ = 66${m}^{2}$(aaprox)

Cost per meter = ₹4

Total cost = 66×4 = ₹264

Answer 2

length of wire = circumference = πD

= 21π metres or appr 66 m

cost = 4(21π) = 84π

= 263.89 or appr Rs 264

SORRY JI PEHELE GLT HO GYA...