Question

Find the area enclosed between two concentric circles of radii 7 m and 8.75 m. (root id 22/7

Answer 1

9.625 m^2
hope it helps

Answer 2

$<b>Given, radius,r = 7cm Radius,R = 8.75$

$therefore = \frac{\pi × {R}^{2} × \theta}{360°} - \frac{\pi × {r}^{2} × \theta}{360°}$

$= \frac{\pi ×\theta}{360°}( {R}^{2} - {r}^{2})$

$= \frac{22×90}{7×360}(76.5625 - 49)$

$=\frac{11}{14}(27.5625)$

$=\frac{303.1875}{14}$

$=21.65625 {m}^{2}$