# The area of a circular playground is 22176 m2. Find the cost of fencing this ground at the rate of Rs 50 per metreNCERT Class XMathematics - Exemplar ProblemsChapter _AREA RELATED TO CIRCLES

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area of circle = π r²

(22176 × 7)÷22= r²

r²=7056

r =84

circumference is the fence of the circle=2πr

=2 × 22/7 × 84

=528m

now,

ATQ

COST ON TOTAL FENCING ON CIRCULAR field is 50/m²

So,

50 × 528

rs.26400

so simple try its it is easy.