Question

Find the area of the shaded portion in the figure given below.
a) 154 cm2
b) 256 cm2
c) 42 cm2
d) 50 cm2


​

Answer 1

Answer:

ANSWER

AC=54cm

BC=10cm

AB=AC−BC=54−10=44cm

Area of colored region = Area of large circle - Area of small circle

= π(R

2

−r

2

)=

7

22

((27)

2

−(22)

2

)[

2

AB

=r]

=

7

22

(729−484)=

7

22

×245=770cm

2

Answer 2

Answer:

c)42cm2

Step-by-step explanation:

here two semicircle can join together to form complete circle and diameter is 14 cm so radius=7cm

Now area of circle=πr^2

= 22/7×49

=154cm^2

now area of square= a2

= 14^2

=196cm^2

hence area of shade portion =area of square-area of those two semicircle (one complete circle)

=196cm^2-154cm^2

=42cm^2