This question was answered but no solution was given.
We already solve for the B or area of the triangular base which was 5.25cm².
There are 2 triangular faces in the prism so 5.25cm² x 2 = 10.50cm² There are 3 rectangular face in the prism, we need to get the area of each.
area of a rectangle = length x width rectangle 1: 5 cm x 4 cm = 20 cm² same dimension with rectangle 2. so, area is 20 cm² also rectangle 3: 5 cm x 2.8 cm = 14 cm²
let us all add up the area of each surface. 2 triangle = 10.50 cm² 3 rectangles = 20 cm² + 20 cm² + 14 cm² = 54 cm²
