find the surface area of the prism:

Question

L 11m W 6mm H 3m

a)48m 3
b)346m 3
c)780m 2rd
d)195m 2rd

I THINK 346m SQUARED

Answer 1

As = 2(W*h) + 2(L*h) + 2(L*W).
As = 2(6*3) + 2(11*3) + 2(11*6) = 234 m^2.

Does W = 6mm or 6 m ?.