Question

Radius =8cm
, diameter=? find circumference=?

Answer 1

Answer:

r=8cm

d= 2×r

= 2×8 = 16cm

Circumference of a circle = 2×π×r

= 2 × 22/7 × 8

=352÷7

= 50.29 (approx.)

Answer 2

The diameter is 16 cm and the circumference is 50.28 cm.

Step-by-step explanation:

Given, the radius of the circle = 8 cm

• Then, diameter = two times radius $= 2\times r = 2\times 8 = 16 cm$

Hence, the diameter of the given circle is 16 cm.

Now, finding the circumference:

• The circumference of the circle $=2\pi r$

The value of pi $=\frac{22}{7}$ and radius$= 8cm$

So, circumference $= 2\times \frac{22}{7}\times 8 = 50.28 cm$