Question 1: Calculate the surface area of a cuboid with length 4 cm, width 3 cm, and height 5 cm.

Answer: 94

Question 2: A rectangular box measures 6 m by 2 m by 3 m. Find its surface area.

Answer: 72

Question 3: State the formula for the surface area of a cuboid.

Answer: 2(lw + lh + wh)

Question 4: Construct a cuboid with dimensions 8 cm, 5 cm, and 3 cm. Calculate its surface area.

Answer: 124

Question 5: A warehouse storage box has dimensions 10 m by 4 m by 2.5 m. What is its surface area?

Answer: 165

Question 6: Calculate the surface area of a cuboid with length 7 cm, width 4 cm, and height 6 cm.

Answer: 188

Question 7: A box has dimensions of 3 m, 2 m, and 1.5 m. Find the surface area and explain each step.

Answer: Surface area = 2(3×2 + 3×1.5 + 2×1.5) = 2(6 + 4.5 + 3) = 2(13.5) = 27

Question 8: A cube-shaped box has a surface area of 96 cm². Find the length of each side.

Answer: 4

Question 9: Identify and correct the mistake: A student calculated the surface area of a cuboid as 2(5×3 + 5×2 + 3×2) = 60 cm², but the actual surface area is 94 cm².

Answer: The mistake is in the calculation or the dimensions; recheck the dimensions and calculation steps.

Question 10: Challenge: A cuboid's surface area is doubled when its length is increased by 2 cm, width by 1 cm, and height by 3 cm. If the original dimensions are 5 cm, 4 cm, and 3 cm, find the new surface area.

Answer: Calculate original SA, then new SA with increased dimensions, and verify doubling.