Find the area of a circle
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Case 1: When radius is 21cm
Area=πr²
=22/7×21×21
=22×3×21
=1386cm²
Case 2: When diameter is 16cm
Radius=D/2
=16/2
=8 cm
Area=πr²
=22/7×8×8
=1408/7
=201.14 cm²
Area=πr²
=22/7×21×21
=22×3×21
=1386cm²
Case 2: When diameter is 16cm
Radius=D/2
=16/2
=8 cm
Area=πr²
=22/7×8×8
=1408/7
=201.14 cm²
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