Answer:
96 in.²
Step-by-step explanation:
Surface Area of the prism = 2(area of the 2 equal triangles) + area of rectangle A + rectangle B + rectangle C
✔️Area of the two triangles with the following dimensions:
height = 3 in.
base = 4 in.
Area = 2(½*4*3) = 12 in.²
✔️Area of rectangle A = L*W
L = 7 in
W = 5 in
Area of rectangle A = 7*5 = 35 in.²
✔️Area of rectangle B = L*W
L = 7 in
W = 4 in
Area of rectangle B = 7*4 = 28 in.²
✔️Area of rectangle C = L*W
L = 7 in
W = 3 in
Area of rectangle C = 7*3 = 21 in.²
✔️surface area of the prism = 12 + 35 + 28 + 21 = 96 in.²
