Question

robot 3.5 metre wide surrounds a circular Park whose circumference is 88 metre find the cost of paving the road at the rate of 60 per square metre​

Answer 1

Explanation:

Hello frnd!!

here's ur answer...

circumference of the park=88m

2πr=88m

2×22/7×r=88m

44/7×r=88m

r=88/1×7/44

r=2×7

r=14cm

therefore radius of the park along with the road=14+3.5

=17.5m

area of the park=πr²

=22/7×14×14

=22×2×14

=44×14

=616m²

area of the park along with the road=πr²

=22/7×17.5×17.5

=6737.5/7

=962.5m²

area of the road=962.5-616

=346.5m²

total cost of paving the road if per metre² costs$60

=346.5×60

=$20790

hope this helps...

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