If diameter of semi-circle is 7 cm then perimeter of semi circle is ................... .

Semi-Circles

If radius of a circle is 7 cm. Then find the diameter of a circle.

In the given figure,diameter of larger semi- circle is 14cm and radius of smaller semi- circle is 3.5cm. find :

If the area of a semi-circle be 77 sq m, find its perimeter.

The diameter of a circle is 7.7 cms. What is the circumference of the circle ?

If the perimeter of a semi-circle is 144 cm, find its radius (in cm).