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A circle of 12cm radius has an area of 453cm square What is the area of a circle with a radius of 5cm square

Sagot :

nehu16

Answer:

Let the side of square be a cm and radius of the circle be r cm

Give, r=12 cm

Area of the square =a2cm2

   ΔABC is a right angled triangle.

Thus, by Pythagoras theorem, we have

AB2+BC2=AC2

⇒a2+a2=(2r)2

⇒2a2=4r2

⇒a2=2r2

⇒a2=2(12)2

⇒a2=2×144

          =288cm2

Step-by-step explanation:

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