Question

pls solve this.
wrong ans~~ report
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Answer 1

Answer:

$perimeter \: of \: circle \: is \: = 2 \times \pi \times r = 178cm$

$2 \times \frac{22}{7} \times x = 178$

$\frac{44}{7}x = 178$

$x = 178 \times \frac{7}{44}$

$x = 28.3181cm$

$area \: of \: circle \: is \: = \pi \times {r}^{2}$

$\frac{22}{7} \times 28.3181 \times 28.3181$

$2519.29 {cm}^{2}$

$perimeter \: of \: semicircle \: is \: = \frac{2\pi r}{2} + d = \pi r + d$

$\frac{22}{7} \times 28.3181 + 56.6362$

$22 \times 4.04 + 56.6362$

$88.88 + 56.6362$

$145.5162cm$

$area \: of \: semicircle \: is \: = \frac{\pi {r}^{2}}{2}$

$\frac{2519.29}{2}$

$1259.649 {cm}^{2}$