Question

Help me; maths class 10 area related to circle

Answer 1

AREA of shaded region =  area of square - area of circle 
                                       = a² - πr²
                                       = 144 - 113.04
                                       = 30.96 cm²

here is ur answer hope it helped

Answer 2

As ABCD is a square therefore the angles will be 90° at every corner.

The sectors are placed such a way that the radius is 12/2 that is 6cm.

Now,

As all sectors have 90° ( which add up to 360°) and the radius is equal .So, we conclude it as one circle.

Area of shaded region = ( area of square) - ( area of circle )

= ( Side )² - ( πr²)

= (12)² - (3.14 × 6 ×6)

= 144 - 113.04

= 30.96cm²

Glad to help you!