Find the surface area of each figure to the nearest tenth.

For the cylinder on the left-hand-side,



now, for the triangular prism on the right-hand-side,

notice is really just 2 triangles and 3 rectangles, stacked  up to each other at the edges.

the triangles have a base of 4, and a height of 1.5.

the rectangle on the left and the one on the right is a 6x2.5 rectangle.

the rectangle at the bottom, is a 4x6 rectangle.

adding their areas, is the area of the prism,

40 & 50 in the right corner are the complementary angles as when placed in a sum (added together) they make 90°