Answer:
5 cm
Step-by-step explanation:
Given a semicircle with perimeter 25.71 cm, we are required to find the radius of the circle.
Circumference of a Semicircle
=Length of the Circular part+Length of the diameter


I believe it's the 3rd one. It's a really tricky question sorry if you get it wrong
So you multiply 2 1/3times 1 1/2 and you get 3 and 1/6
Standard deviation (s): 2.7386127875258