Find perimeter of semicircle if radius is 22 cm (π=22/7)

To calculate the perimeter of a circle we have this formula:

And, if we're going to calculate for a semicircle, we should divide it by 2

We should also take into account the diameter, as, if it's a semicircle, we also have to add the base of it, which will have the diameter length

Knowing this, we can see the formula to calculate this specific perimeter

Now, we can replace r by 22:

So the perimeter is approximately 113.12 cm

the aswere is the one with all 8's and the second one is with the 10,8 and 6

step-by-step explanation: