Question

the circular portions of the following figures are semi circles for each of the following figures find its
a) perimeter
b) area​

Answer 1

Answer:

$\bf Area=661.5 \ cm^2$

Step-by-step explanation:

Area of the figure

= ar( semicircle 1)+ar( semicircle 2)+ar( Rectangle 3)

$=\bf \frac12 \pi r^2 +\frac12 \pi r^2+Length \times breadth\\\\=\pi r^2 +21 \times 15\\\\=\frac{22}{7} \times 10.5\times 10.5+315\\\\=346.5+315\\\\=661.5 \ cm^2$