Question

shade the following parts of a circle and rectangle
1/2,1/4,3/8,5/8
shade 1/5 of a rectangular pentaycon​

Answer 1

Step-by-step explanation:

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

Answer 2

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