Question

Work out the perimiter of a semi circle with radius of 3
Give your answer in term of pi

Answer 1

15.425 cm is it without terms of pie

Explanation:

you need to put it into terms of pie

Answer 2

3pi + 6 units.

Explanation:

The perimeter = the diameter + curved part.

Radius = 3 so the diameter = 2*3 = 6.

Length of the curved part = 1/2 * circumference of the circle = 1/2 * pi * diameter.

Perimeter = 6 + 1/2 pi * 6

= 3pi + 6 units.