Ellen said that (5 × 4) × 3 = 60. which is another way to do this problem to check ellen's answer?

a.
(5 + 4) × 3

b.
5 × (4 × 3)

c.
5 × (4 – 3 )

d.
5 × (4 + 3)

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