In the adjoining figure, OABC is a square of side 7 cm. OAC is a quadrant of a circle with O as centre. The area of the shaded region is C 4 B (a) 10.5 cm2 (b) 38.5 cm2 (C) 49 cm2 (d) 11 5. cm2
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Your ans is - (a) 10.5 cm2
Explanation is given in attached pic.
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Answer:
10.5cm²
Step-by-step explanation:
square OABC=7²cm²
= 49cm²
squares are OAC= πr²/360×90cm²
= 22/7×7×7×1/4cm²
=77/2cm²
•Area of shaded region squareOABC -area of OAC
=(49-77/2)cm²
=98-77/2cm²
=21/2cm²
=10.5cm²
Option (a) is correct
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