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2015-12-21T20:35:26+05:30
Radius of the circle is 8 cm. ⇒ diameter=16 cm
⇒side of the square is 16 cm.
Area of the square is a²
= (16)²
= 256 cm²
∴ Area of the square is 256 cm².

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2015-12-21T22:57:24+05:30

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If you draw the diagram, it can be seen that diagonal of square is the diameter of the circle.
diameter = 2 ×8 = 16 m
so, diagonal of square = 16
area = 1/2 ×(diagonal)²
         =1/2 ×(16)²
         = 128 cm²

method 2
if side is a cm
diagonal = a√2 cm =16
side, a =16/√2 =8√2
area = (side)²
        =(8√2)² = 128 cm²

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