Question

what is circumference of semicircle if diameter is 10
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Answer 1

Answer:

5pie is the answer and I am dam sure

Answer 2

Step-by-step explanation:

C is the circumference (or perimeter), and

r is the radius.

Also,

d=2r , where d is diameter.

Now, plug in 10cm (the diameter) into this equation to find the radius of the given circle (as d).

d=2r

10=2r

r= 5cm

Now, you can use the radius that you found to find out the circumference

C=2πr

C=2π(5cm)

Now, you can enter this into your calculator, where

π is about 3.14

After doing so, you should get the following number:

C=30.9 cm

These are your answers!

I hope that helped!