Question

From a rectangular metal sheet of sides 28 cm and 40 cm, a circular sheet as big as possible is cut
off. Find the area of remaining sheet.

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Answer 1

Step-by-step explanation:

So,

Diameter of circular sheet = 30 cm , So radius of circular sheet = 15 cm

Area of remaining sheet = Area of rectangular sheet - Circular sheet

Area of remaining sheet = Length × Breadth - π r2

Area of remaining sheet = 40 × 30 - 227× 15× 15

Area of remaining sheet = 1200 - 49507

Area of remaining sheet = 1200 - 707.14

Area of remaining sheet = 492.86 cm2 ( Ans )