Area and Perimeter Practice Test 2

Question : 15 of 40

Marks: +1, -0

What will be the cost of building a fence around a circular field with area equal to 18,634

m^2

; if the cost of building the fence per metre is Rs. 365?

Solution:

Radius of the circular field =

√{{18634×7}/{22}}

√{847×7}

= 77 m
Circumference = 2 ×

{22}/7

× 77 = 484

m^2

Required cost = 484 × Rs. 365 = Rs. 1,76,660

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