Answer:
Lateral surface area of the cuboid = 84 square inch
Total surface area = 119.28 square inch
Step-by-step explanation:
Lateral surface of the cuboid = Total surface area of the cuboid - Area of the top and base of the cuboid
Total surface area = 2(lb + bh + hl) - 2(lb)
Here, l = length of the cuboid
b = width of the cuboid
h = height of the cuboid
Therefore, Lateral surface area of the given cuboid = 2(bh + hl)
= 2(2.1 × 4) + 2(4 × 8.4)
= 16.8 + 67.2
= 84 square inch
Total surface area of the cuboid = 2(8.4×2.1 + 2.1×4 + 4×8.4)
= 2(17.64 + 8.4 + 33.6)
= 2(59.64)
= 119.28 square inch
