Question

http://gyazo.com/02a21555d593c18368d4f6ccefc0ae86 @monicat234 @mathmath333 @freckles

Answer 1

This is very similar to the problem you posted previously. Set up a proportion between the angle given and 360 (the angle of a circle) and then multiply that by the circumference of the whole circle.

15) (70/360)(25) cm

16) (155/360)(x) = 14 cm (solve for x)

Answer 2

Don't you also multiply pie in their too?

Answer 3

pi oops lol

Answer 4

Pi isn't needed because the circumference (or a portion of it) is already given. You don't need to use the radius and/or the circumference formula which would involve pi.