Question

36. Find the circumference of the circles whose diameters are 16 cm
and 20 cm.
[SSE 2010]​

Answer 1

Step-by-step explanation:

daimeter of first circle =16 cm

then circumference of circle = 2πr or πd

=22/7 ×16cm= 352/7cm

=50•286 cm

daimeter of other circle = 20 cm

circumference = 22/7×20cm

=440/7 cm

=62•858 cm

i think its helpful for you

Answer 2

Step-by-step explanation:

For 16 cm

Radius = 16÷2=8 cm

Circumference of circle = 2×pie×radius

pie = 3.14

=> 2×3.14×8

=> 50.24 cm

So, circumference of circle is 50.24 cm.

For 20 cm :-

Radius = 20÷2=10 cm

Circumference of circle = 2×pie×r

pie = 3.14

=> 2×3.14×10

=> 62.8 cm

So, circuference of circle is 62.8 cm.

hope it will help you

thankyou