1.

Find the area of a circle whose circumference is 22cm​

Answer»

now that CIRCUMFERENCE is 2πr

Hence 2πr=22

2×22/7 ×r=22

r=7/2

We KNOW that AREA of CIRCLE=πr^2

22/7×7/2×7/2

77/2

Hence area of circle is 77/2 cm^2



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