The total surface area of each figure are:
1) TSA = 94 cm²
2) TSA = 104 m²
3) TSA = 9600 in²
4) TSA = 73 m²
How to find the total surface area?
The formula for total surface area of the given prisms are:
TSA = 2(LW + WH + LH)
1) We are given:
L = 4 cm
W = 5 cm
H = 3 cm
Thus:
TSA = 2((4 * 5) + (5 * 3) + (4 * 3))
TSA = 2(47)
TSA = 94 cm²
2) We are given:
L = 6 m
W = 2 m
H = 5 m
Thus:
TSA = 2((6 * 2) + (6 * 5) + (2 * 5))
TSA = 2(52)
TSA = 104 m²
3) We are given:
L = 40 in
W = 40 in
H = 40 in
Thus:
TSA = 2((40 * 40) + (40 * 40) + (40 * 40))
TSA = 2(4800)
TSA = 9600 in²
4) We are given:
L = 5.6 m
W = 2.2 m
H = 3.1 m
Thus:
TSA = 2((5.6 * 2.2) + (5.6 * 3.1) + (2.2 * 3.1))
TSA = 2(36.5)
TSA = 73 m²