Question

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Answer 1

$\frac{1}{2} \times \pi \times {r}^{2} \\ 8 \times \pi \\ \frac{176}{27}$

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Answer 2

$\huge\rm\blue{answer:}$

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$\bf{{\underline{To~find}}:}$

• The area of the given semicircle

$\bf{{\underline{Given}}:}$

• Radius = 4 units

$\bf{{\underline{Solution}}:}$

$\sf Area \: of \: a \: semicircle = \frac{1}{2} \pi {r}^{2} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \sf = \frac{1}{2} \times 3.14 \times {(4)}^{2} \: \\ \: \: \: \: \: \: \: \sf = \frac{1}{ \cancel{2} \: ^{1} } \times 3.14 \times \cancel{4} \: ^{2} \times 4 \\ \sf = 3.14 \times 2 \times 4 \: \: \: \: \: \: \: \: \\ \sf = 3.14 \times 8 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \sf = \blue{ \underline{ \boxed{ \bf 25.12 \: \: units^{2} }}} \: \:$