**Question 1: **The circumference of a circle is given as 50cm. Calculate the diameter of the circle?

** Solution: **

The circumference of the circle is given by 50cm.

So, 2$\pi$r=50

2r=$\frac{Given\ value}{\pi }$

d=2r=$\frac{50}{\pi }$=15.91549cm

**Question 2: **Calculate the diameter of the circle whose circumference is given as 30cm?

** Solution: **

The circumference of the circle is given by 30cm.

So, 2$\pi$r=30

2r=$\frac{Given\ value}{\pi }$

d=2r=$\frac{30}{\pi }$=9.54929cm