Question

Help!
I got
21.42
but thats not an option!
Best answer rewarded

Answer 1

just adding the straight segments of the outline: 12+3+12 gives you 27 already. You still have to add the half circle to it. Do you know how to calculate that?

Answer 2

i got 30 w/o the half circle

Answer 3

that figure though o-O

Answer 4

I just forgot to add the 3 and other 12. the circumference of the semicircle is 9.42

Answer 5

So if the perimeter without the semicircle is 27 adding 9.42 would make it 36.42

Answer 6

Correct?

Answer 7

9.42 is the full circle so you should remember to add only half of that. and that would make it close to (a) I believe. does it make sense?

Answer 8

It is? Oh yeah! For semicircle you have to do 2 pi r divided by 2! Silly mistake lol

Answer 9

31.71 would be the answer then. Yes?

Answer 10

correct!

Answer 11

Thank you!

Answer 12

no prob!