Answer:
12
Step-by-step explanation:
144/16=9
Each child gets sixteen coins if there are nine children.
9+3=12
There are three more children so there are twelve.
Subtract 7.8 points by 4.8 and you get 3.4 !!
<span>πd is the circumference of a circle, so with a diameter of 4 a single circle has a circumference of 4π. 1/3 of each circle is in contact with the belt, so that total part is still 4π. Then, the part of the belt connecting from tangent to tangent is 2 radii, so 3 areas is 12. The belt would then be 12+4π cm.</span>
