Area and Perimeter Practice Test 4

Question : 6 of 40

Marks: +1, -0

There is a rectangular tank of length 180 m and breadth 120 m in a circular field. If the area of the and portion of the field is 40,000

m^2

, what is the radius of the field? (Take π = 22/7)

Solution:

Area of the circular field = 40000 + 180 × 120
= 40000 + 21600 = 61,600

m^2

Hence, radius =

√{{61600×7}/{22}}

√{2800×7}

= 140 m

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