The area of a circle is 98.5 6 CM square find its circumference
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Given,
Area of a circle = 98.56 cm^2
Now,
As we know that ,
Area of a circle = pi (r)^2
from given,
pi(r)^2 = 98.56
22/7×(r)^2 =98.56
(r)^2 = 98.56×7/22
(r)^2 = 4.48×7
(r)^2 =31.36
(r) = 5.6 cm
Now,
Circumference of circle = 2 pi (r)
= 2 × 22/7 × 5.6
=2 × 22 × 0.8
= 35.2 cm
Area of a circle = 98.56 cm^2
Now,
As we know that ,
Area of a circle = pi (r)^2
from given,
pi(r)^2 = 98.56
22/7×(r)^2 =98.56
(r)^2 = 98.56×7/22
(r)^2 = 4.48×7
(r)^2 =31.36
(r) = 5.6 cm
Now,
Circumference of circle = 2 pi (r)
= 2 × 22/7 × 5.6
=2 × 22 × 0.8
= 35.2 cm
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