A rectangular box has dimensions length 10 cm, breadth 6 cm, height 4 cm. The surface area of the box is:

Step-by-step solution

1. Surface area of a rectangular box = 2(lw + lh + wh).
2. Compute each face area: lw = 10×6 = 60 cm${}^2$.
3. lh = 10×4 = 40 cm${}^2$.
4. wh = 6×4 = 24 cm${}^2$.
5. Sum the areas: 60 + 40 + 24 = 124 cm${}^2$.
6. Multiply by 2 to get the total surface area: 2×124 = 248 cm${}^2$.
7. Thus the surface area is 248 cm${}^2$.

Concept tested: Surface area of rectangular box

Published 1 October 2026 · How this solution was prepared and checked