find the area of shaded be part
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Step-by-step explanation:
For small circle,
Radii 1st = 7/2 cm
Radii 2nd = 7cm
Area of shaded region = area of big semi circle - area of small semi circle
= ¶R²-¶r²
=¶(R²-r²)
= 22/7( 7²-7²/2²)
= 22/7(49-49/4)
= 22/7(196-49/4)
=22/7 × 147/4
= 22×21/4
= 115.5 cm²
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