Question

in the given figure OACB is a quadrant of a circle with centre O and radius 3.5 cm if OD =2cm find area of shaded region

Answer 1

hope u understand..............

Answer 2

Answer:

$\text{The shaded area is }6.125 cm^2$

Step-by-step explanation:

Given the figure,

Radius=3.5 cm

OD=2 cm

we have to find the area of shaded region.

Area of shaded region=area of quadrant-ar(ΔOBD)

$=\frac{\pi r^2}{4}-\frac{1}{2}\times OB\times OD$

$=\frac{1}{4}\times \frac{22}{7}\times 3.5\times 3.5-\frac{1}{2}\times 3.5\times 2$

$=\frac{3.5}{2}(\frac{1}{2}\times \frac{22}{7}\times 3.5-2)$

$=\frac{3.5}{2}\times 3.5=6.125 cm^2$