Question

find area of shaded region​

Answer 1

Answer:

134.75 m²

Step-by-step explanation:

$area \: of \: semi \: circle = \frac{\pi }{2} \times {( \frac{d}{2} )}^{2} \\ area \: of \: shaded \: region \: = \frac{\pi }{2} \times { (\frac{21}{2}) }^{2} - 2 \times \frac{\pi }{2} \times {( \frac{7}{2}) }^{2} \\ = \frac{22 }{7 \times 2} \times { (\frac{21}{2}) }^{2} - 2 \times \frac{22 }{7 \times 2} \times {( \frac{7}{2}) }^{2} \\ = 173.25 - 38.25 \\ = 134.75 \: {m}^{2}$

Answered by Gauthmath