Question

In a plate of 6 cm x 12 cm size, 6 holes each of 3 cm diameter. What is area of the plate?
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Answer 1

Answer:

D=3cm

r=3/2

Area of 6 holes = 6πr² = 6 x 22/7 x 3/2 x 3/2

=  11 x 27/7 = 42.4cm²

Area of rectangular plate = 6x12 = 72cm²

Area of the remaining part = Area of rectangular plate - Area of 6 holes

= 72 - 42.4 = 29.6cm²

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