What will be the area of the semi - circle of perimeter 3.6 meters?

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