Question

if diameter is 7cm then circumference=?​

Answer 1

Answer:

Circumfrence of circle

$2\pi \: r$

also

d= r(2)

or Diameter is equal to twice the radius.

2 (22/7) (7/2) [Radii= dia/2]

2(11)

22cm

Therefore the circumfrence is 22cm

Answer 2

Answer:

Circumference =22cm

Step-by-step explanation:

Given diameter of a circle is(d)=7cm.

Now, we know that circumference of circle is =πd, where d is diameter of circle.

So, here circumference is = π×7cm

= 22/7 × 7

=22cm