find the area of the circle whose circumference is 19.36 cm
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circumference of circle = 2πr
19.36 = 2 X 22 /7 r
19.36 = 44/7 r
19.36 x 7/44 r
1936 X 7 / 44x100
13552/4400 = 3.08
therefore, radius = 3.08
now , area of circle = πr²
= 22/7 x 3.08 X 3.08
= 22/7x 9.4864
= 1.3552 X 22
= 29.8144
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