Can someone please help me out?

For Volume: 54ft^3

For Surface Area: D. 90ft^2

Step-by-step explanation:

Volume formula of rectangular prism: V = L * W * H

By replacing the variables with the given numbers we get the following:

V = 3ft * 3 ft * 6 ft

By multiplying, we get 54ft^3.

Surface Area formula of rectangular prism: SA = 2 (L*W + L*H + W*H)

By replacing the variables with the given numbers we get the following:

SA = 2 (3*3 + 3*6 + 3*6)

By multiplying, we get:

SA = 2 (9 + 18 + 18)

We add the numbers inside the parenthesis, then we multiply by two to get the following:

SA = 90 ft^2

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21

12 dolars one is cheaper becasue 3 pairs is 6 means is sock is 2 while the 12 is cheaper