A square OABC is inscribed in a quadrant of a circle . if OA = 21 cm . Find the area of the shaded region
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0
Answer:
252 cm²
Step-by-step explanation:
iN THE FIGURE WE SEE
In the ΔOAB
OB²=OA²+AB²
OB² =√(21²+21²)=882
Do radius r²=882
Area of the quadrant=1/4*22/7*882
=(22*882)/28==693 cm²
Area of the square =21*21=441 cm²
Thus area shaded aprt
=693-441= 252 cm²
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Answer:
A = 252 cm²
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