Question

The circumference of a circle of diameter , 32 cm​

Answer 1

Answer:

1. Circumference = pie x d

Step-by-step explanation:

22/7 X 32 = 100.48

Answer 2

Answer:

Let, d be the diameter and r be the radius of circle

For circle 1, d

1

=32cm ⇒r

1

=16cm

For circle 2, d

2

=24cm ⇒r

2

=12cm

Area of circle 1 =πr

1

2

=π(16)

2

=256π

Area of circle 2 =πr

2

2

=π(12)

2

=144π

It is given that,

Area of circle 3 = Area of circle 1 + Area of circle 2

Area of circle 3 =256π+144π

πr

3

2

=(256+144)π where r

3

is the radius of third circle

r

3

=

256+144

r

3

=

400

=20

r

3

=20cm.