Pls tell me the answer of the question that I have circled
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a. first u got two radius...
so for circular road cost u need to find difference between outer and inner circle area.
calculate using formula 3.14xsquare of radius.
after finding both area , find difference this will be your circular track area. multiply with cost and you will get total cost for track.
b. for fensing cost you need to find circumference of outer circle, use formula 2x3.14x radius of outer circle.
now multiply circumference with cost of fensing and you will get your answer.
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