Question

please help and solve this question



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Answer 1

Answer:

Area of the shaded region=Area of the rectangle-Area of the small semicircle

$area \: of \: rectangle = l \times b$

$l = 8 \\ b = 2$

$= 8 \times 2$

$= 16cm {}^{2}$

$area \: of \: semicircle = 1 \div 2r {} {}^{2}\pi$

$= 1 \div 2 \ 3.14 \times 4 \times 4$

$= 176 \div 7$

$= 25.14cm {}^{2}$

$= area \: of \: the \: shaded \: portion = 16cm {}^{2} - 25.14cm {}^{2}$

$= 9.14cm {}^{2}$

$area \: of \: the \: shaded \: portion = 9.14cm {}^{2}$

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