Find the surface area of this prism. how to get the answer? ?

To find the surface area of a prism (or any other geometric solid) we open the solid like a carton box and flatten it out to find all included geometric forms. To find the volume of aprism (it doesn't matter if it is rectangular or triangular) we multiply the area of the base, called the base area B, by the height h

Surface area = area of 5 faces of given prism

= 6 * 4 + 3 * 6 + 5 * 6 + 1/2 * 3 * 4 + 1/2 * 3 * 4

= 24 + 18 + 30 + 6 + 6

= 84m²

Ithink the answer is b