Question

OABC is a square of side 4cm. Find the area of the shaded region.

please do answer it.​

Answer 1

Answer:

AREA OF SHADED REGION= AREA OF SQUARE-AREA OF THE TWO SEMICIRCLES

AREA OF SQUARE= 4*4=16CM²

AREA OF SEMICIRCLE= πR²/2= 3.14 *4/2

                                      = 6.28CM²

AREA OF SHADED REGION= 16- 2(6.28)= 16-12.56

                                              =3.44 CM²

                                              =

=

Step-by-step explanation:

Answer 2

Answer: 24/7 cm sq.

Step-by-step explanation:

side of square=4 cm

diameter of semicircle=4 cm

radius of semicircle=d/2=4/2

=2 cm

Now,

Area of shaded region=Area of square-Area of semicircles

=(side)x(side)-2 x 1/2πr x r

=4 x 4-22/7 x 2 x 2

=16-88/7       (take lcm)

=112-88/7

=24/7 cm sq.

or

=3.4285 cm sq.