Answer:
448 in²
Explanation:
The amount of wrapping paper needed is the same as the surface area.
The shape is a rectangular prism.
Use the formula for the surface area of a rectangular prism.
SA = 2[(lw) + (hw) + (hl)]
l is for the length, w is for the width, h is for the height.
The dimensions are usually given as length x width x height.
l = 8
w = 8
h = 10
Substitute the values into the equation
SA = 2[(lw) + (hw) + (hl)]
SA = 2[(8*8) + (10*8) + (10*8)] Simplify within each curve bracket
SA = 2[64 + 80 + 80] Add within the square brackets
SA = 2[224] Multiply
SA = 448 Final answer without units
The unit for area is the unit squared.
Therefore, 448 in² of wrapping paper is needed.