Question

The figure is formed by two identical semicircles in a rectangle. Find the area of shaded parts.
(Take pi = 3.14)
= 1 / 1
A) 6.42 cm?
B) 3.44 cm?
C) 2.88 cm?
D) 4.04 cm?
2 cm
2 cm
2 cm
2 cm​

Answer 1

Answer:

AC is the diameter of the circle.

In the right angled triangle ADC, we have

AC  

2

=AD  

2

+DC  

2

 (Pythagoras theorem)

AC  

2

=5  

2

+12  

2

 

AC  

2

=25+144

AC  

2

=169

AC=13 cm

Radius of the circle =  

2

AC

​  

=  

2

13

​  

=6.5 cm

Area of the shaded part = Area of the circle − Area of the rectangle

                                        = πr  

2

−lb

                                        = 3.14×6.5  

2

−(5×12)

                                        =132.665−60

                                        =72.665 cm  

2

Step-by-step explanation:

Answer 2

Answer:

uper ka pdho....hehee