Question

A box needs to be decorated to use as a prop in a play. The bottom and the back of the box do not need to be decorated. What is the surface area of the box that needs to be decorated

The front measure is 27cm
The side measure is 20cm
The height is also 20cm

Answer 1

Interpret the box as a rectangular box with width (front) = 27 cm, depth (side) = 20 cm, height = 20 cm. The faces to be decorated are the front, the top, and the two side faces (back and bottom are not decorated).

Areas:
- Front = 27 × 20 = 540 cm²
- Top = 27 × 20 = 540 cm²
- Two sides = 2 × (20 × 20) = 2 × 400 = 800 cm²

Total decorated area = 540 + 540 + 800 = 1880 cm².