The area of a circular playground is 22176 m2. Find the cost of fencing this ground at the rate of Rs 50 per metre
NCERT Class X
Mathematics - Exemplar Problems
Chapter _AREA RELATED TO CIRCLES
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given,
area of circular playground=22176m²
we know that,
area=πr²
=>22176=πr²
=>22176=22/7 * r²
=>1008×7=r²
=>7056=r²
=>84=r
circumference of circular playground=2πr
=2 * 22/7 *84
=2*22*12
=528m
cost of fencing per m=Rs.50
cost of fencing for 528m=50×528
=Rs.26400
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area of circular playground=22176m²
we know that,
area=πr²
=>22176=πr²
=>22176=22/7 * r²
=>1008×7=r²
=>7056=r²
=>84=r
circumference of circular playground=2πr
=2 * 22/7 *84
=2*22*12
=528m
cost of fencing per m=Rs.50
cost of fencing for 528m=50×528
=Rs.26400
HOPE U UNDERSTAND
PLS MARK IT AS BRAINLIEST
nikki1231:
pls mark it as brainliest
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