Question

Use the formula S=2(w)+2(k)+2(wk) to find the surface area of a rectangular prism with the following dimensions:

- length = 2 cm
- width = 3 cm
- height = 4 cm

A. S =21cm²
B. S = 48 cm²
C. S = 52cm²
D. S = 96cm²

Answer 1

I do not understand your formula
I see:
S = 2 ( L W) + 2 (W H) + 2 (L H)
= 2 (2*3) + 2(3*4) + 2(2*4)
= 12 + 24 + 16
= 52 which is C

Answer 2

B. S = 48 cm²