Question
The area in cm2 of the shaded region if the radius of the smaller circles are 1 cm each is 6.28 cm2.
Answer: Option B
:
B
From figure, area equal to one full circle exists in the semi-circle.
Area of larger semi-circle = 3.14×222 = 6.28cm2
Area of smaller semi-circles = 2 x3.14×122 = 3.14cm2
Area of shaded portion = 3.14 cm2
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:
B
From figure, area equal to one full circle exists in the semi-circle.
Area of larger semi-circle = 3.14×222 = 6.28cm2
Area of smaller semi-circles = 2 x3.14×122 = 3.14cm2
Area of shaded portion = 3.14 cm2
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