Question

if a circle is having diametere of 7m what is the area of the half ccircle.

Answer 1

$$\begin{gathered} \mathrm{Radius}\mathrm{of}\mathrm{circle}=\frac{\mathrm{Diameter}}{2}=\frac{7}{2}\mathrm{m} \\ \mathrm{So}\mathrm{area}\mathrm{of}\mathrm{the}\mathrm{half}\mathrm{of}\mathrm{the}\mathrm{circle} \\ =\frac{1}{2}{\mathrm{\pi r}}^2=\frac{1}{2}\times \frac{22}{7}\times \frac{7}{2}\times \frac{7}{2} \\ =\frac{77}{4}=19.25{\mathrm{m}}^2 \end{gathered}$$