3. how does borrowing when subtracting decimals relate to borrowing when subtracting fractions?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Can someone, me with this.i really need with this