Question

find the diameter of 20​

Answer 1

diameter = 20

Radius = 20 / 2

10

Answer 2

$\huge\blue{\mid{\fbox{{Solution}}\mid}}$

The circumference of the circle is = 20cm

(note : assuming units to be in cm)

The formula for circumference of circle = 3πr

r = radius, π = 22/7 (constant)

2πr = 20

2 × 22/7 × r = 20

r = 20 × 7/22 × 1/2

r = 10 × 7/22

r = 70/22

So, the diameter = 2 × radius

= 2 × 70/22

= 70/11

Diameter = 6.36cm

hope it's help you