Question

The radius of a circular garden is 56 cm. What would it cost to put a three round fence around this garden at cost of Rs. 35 per metre?​

Answer 1

Answer:

Given radius of circular garden =56mPerimeter of garden =2πr=2π×56Perimeter =112πmNow for four rounds =112π×44 perimeter =448πm.Cost of fencing =40 Rs./mTotal cost of fencing =40×448π=17920πRs.Total cost =56,267.8 Rs.Total cost of fencing is 56,268.8 Rs.

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Answer 2

$\huge\mathfrak\red{Answer}$

Radius of the garden = 56m

Circumference of the garden =

$2 \: \pi \: r \\ = 2 \times \frac{22}{7} \times 56m \\ = 2 \times 22 \times 8m \\ = 352m$

Cost of fencing/per m = ₹35

352m fencing will cost = 352m × ₹35

= ₹12,320.

Hence, cost of fencing the circular garden is ₹12,320

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