Answer:
circumference is πd
d=112mm
22/7*112
=352mm
Step-by-step explanation:
In this problem WP means what percent
20 = WP X 160
solve for WP, by dividing both sides by 160
and you get:
0.125 = WP
Change your decimal into a percent by multiplying by 100%
12.5% is your result.