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Question
From a circular card sheet of radius 14 cm, two circles of radius 3.5 cm and a rectangle of length 3 cm and breadth 1 cm are removed. (as shown in the following figure). Find the area of the remaining sheet. (Take `pi = 22/7`)
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Solution
Area of bigger circle = `22/7 xx 14 xx 14`
= 616 cm2
Area of 2 small circles = `2 xx pir^2`
= `2 xx 22/7 xx 3.5 xx 3.5`
= 77 cm2
Area of rectangle = Length × Breadth
= 3 × 1
= 3 cm2
Remaining area of sheet = 616 - 77 - 3
= 536 cm2
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