Question

A farmer has a field in the shape of a semicircle of diameter 50 m. First,

calculate the length of the semicircle to 1 decimal place.
50 m

Answer 1

157.1 m

Explanation:

Here, we want to calculate the length of the semi-circle

This simply refers to the circumference of the semi-circle

Mathematically, the circumference is half that of a full circle

The circumference of a full circle is;

C = pi * d

For half circle or semi-circle;

It is ;

C = (pi * d)/2

D = 50 m

The circumference is thus;

C = 50 * 3.142

C = 157.1 m