In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data:
gift box:
26.5 cm x 6 cm x 34.5 cm
Step 02:
amount of wrapping paper:
cuboid:
total surface area = 2 * (lw + lh + wh) = 2 * (26.5cm*6cm + 26.5cm*34.5cm + 6cm*34.5cm) = 2560.5 cm²
The answer is:
The least amount of wrapping paper Grace will need is 2560.5 cm²