Question

Find the areas of shadee regions of following geometrical figures ?

​

Answer 1

Step-by-step explanation:

a=45cm

h=24cm

b=d=35cm

r=d/2=35/2

area of shaded region = area of trapizium- area of semi circle

$= \frac{1}{2} (a + b)h - \frac{1}{2} \pi {r}^{2} \\ = \frac{1}{2} (45 + 35)24 - \frac{1}{2} \times \frac{22}{7} \times \frac{35 \times 35}{2 \times 2} \\ = 80 \times 12 - \frac{1925}{4} \\ = 960 - 481.25 \\ = 478.75 {cm}^{2}$