Please help I will mark BRAINLIEST

Answer:
The perimeter of the semi-circle will be: 3π + 6cm
Step-by-step explanation:
The formula for the perimeter of a semi circle is given as:
= πr + 2r
where,
π = 3.142
r = radius = 3cm
Therefore, the perimeter will then be:
= πr + 2r
= (3 × π) + (2 × 3)
= 3π + 6
Therefore, the perimeter of the semi-circle will be: 3π + 6cm