Question

If the diameter of a circle is 10.5cm, then find its circumference

Answer 1

given,: diameter=10.5

radius= 10.5/2

circumference= 2πr

=2×22/7×10.5/2

= 22/7×10.5

=33

Answer 2

Answer:

2πr=formula of circumference of circle

Step-by-step explanation:

r=10.5/2

i.e.5.25

now,

2πr=2*3.142*5.25=14.091cm ans