Answer:
a. 
b. 
Step-by-step explanation:
The shaded area is the area of the square minus the area of the circle, so it is , because s is the diameter of the circle. Filling in s = 10 gives us that the shaded area equals .
That’s not enough information to say how long he could do it. He could go slower or faster than her but by how much if so. So it’s not enough info.
Lets say travi's rope is T feet long
and Stacy's rope is 23 feet long
3T-4=23
3T=23+4
3T=27
T=9 feet long
so Travis rope is 9 feet long
Has form - last two
can be put in form - none
other - first four
