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Question

In the figure below, PQRS is a square. If RS = 4 units, then the area of the shaded portion (in sq. units) is:


Your Answer
A
2(2π1)
Your Answer
B
22(π1)
Your Answer
C
4(2π1)
Correct Answer
D
(2π4)

Solution

The correct option is A (2π4)
ΔQSR is a right-angled isosceles triangle.
RS = 4 units
So, QS=42 units, OS=22
Hence, shaded area =12(π(22)228)(2π4) sq.unit

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