from a circular sheet of radius 4 cm, a circle of radius 3 cm is removed. Find the area
of the remaining sheet. (Take π =3.14)
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area of circular sheet = πr²
= 3.14×4×4
= 50.24
area of circle removed = πr²
= 3.14×3×3
= 28.26
then,
50.24 - 28.26
= 21.98
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