Question

Area of quadrant OACB - area of AOAD
Sol. Area of quadrant OACB
300
4
2
.. area of shaded region
77
77 - 28
49
1
(7x4)
2
77
-14
2
= 24.5 cm:. (b) holds,
2
2
2
EXERCISE-3
1. In the given figure, ABCD is a square in a circle of radius 7 cm.
(i) the area of the square ABCD (ii) the area of the shaded region.
(a) Find the area of the shaded region if the radius of each circle is 4 cm
Calculate :
D
с
4 cm
4 cm
4 cm
4 cm​

Answer 1

Answer:

Circumference = 39.6 cm

We know:

Circumference of a circle = 2πr

⇒39.6

Also,

Area of the circle = πr2

=227×6.3×6.3=124.74 cm2