Answer:
A is 25in
B is 128.5in
Step-by-step explanation:
A. The radius is half of the diameter, so 50in is the diameter so 50in divided by 2 is 25in so is the radius.
B. This time we are find the the circumference. So the formula is πd or pi times diameter or two pi radius. So it would be 50+50(3.14)/2. divide by two because its a semi circle and add 50 because of the diameter. You would only do this if its not a full circle . So now if you simplify you have 25(3.14)+50 which gives you 128.5in.
