1.

What will be the area of the largest square that can be cut out of a circle of radius 10 cm?(a) 100 cm2 (b) 200 cm2 (c) 300 cm2 (d) 400 cm2

Answer»

(b) 200 cm2

From the question it is given that, radius of circle 10 cm.

Square has diagonal equal to its diameter.

Diameter = 2 × radius

= 2 × 10

= 20 cm

Then, let us assume the side of the square be P.

So, area of square be P2.

By the rule of Pythagoras theorem,

Diagonal2 = height2 + base2

202 = P2 + P2

202 = 2P2

400 = 2P2

P2 = 400/2

P2 = 200 cm2

Therefore, area the largest square that can be cut out of a circle of radius 10 cm is 200 cm2.



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