A circle of radius 2 cm is cut out from a square piece of an aluminium sheet of side 6 cm. What is the area of the left over aluminium sheet? ( Take π = 3.14)

Radius of circle = 2 cm and side of aluminium square sheet = 6 cm
According to question,
Area of aluminium sheet left = Total area of aluminium sheet – Area of circle
= side x side -πr²
= 6 x 6 – 22/7x 2 x 2
= 36 – 12.56
= 23.44 cm²
Therefore, the area of aluminium sheet left is 23.44 cm².

Class 7 Maths Chapter 11 Exercise 11.3

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