Answer:
The continuous closed line that makes the boundary of a two-dimensional shape is known as the perimeter. It’s easy to work out the perimeter of a shape with straight edges, such as a square, because you simply add the lengths of each edge together. A different formula is required to work out the perimeter of a semi circle (a circle cut in half), because it consists of a curved edge as well as a straight edge. That formula is
Step-by-step explanation:
P = \frac{1}{2} πd + dP=
2
1
πd+d
where d is the diameter of the semi circle.
Apply the number pi (π) to the formula
P = \frac{1}{2} πd + dP=
2
1
πd+d
Pi is a circle's circumference divided by its diameter and is always the same value, 3.14.
I think I got it right
