Question

The diameter of a circular park is24 metre. A 3m wide path runs around it from inside. Find the cost of paving the path at ruppees 25 per metre

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Answer 1

Answer:

Rs.4950

Step-by-step explanation:

D1 124m so r1=12m

D2 18m. so r2= 9m

area of circular park= πr^2

a1 = 22/7(12^2)

area of circular park= πr^2

excluding path

a2= 22/7(9^2)

area of path a1- area of a2

= 22/7(12^2)-22/7(9^2)

= 22/7(144)-22/7(81)

= (3168-1782)/7

=1386/7

= 198m^2

cost= 198(25)

= Rs.4950