Practicing Success
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What will be the area of the semi - circle of perimeter 3.6 meters? |
1.54 m² 1.76 m² 1.10 m² 0.77 m² |
0.77 m² |
Perimeter of a semi - circle = $\pi r$ + 2r = 3.6 (using $\pi$ = 3.14) r($\pi $ + 2) = 3.6 ⇒5.14 r = 3.6 r = 0.7 m Area of the semi - circle = $\frac{\pi r^2}{2}$ = $\frac{3.14.0.7.0.7}{2}$ = 0.77 m² |
