Stella received a package in the shape of rectangular prism. the box has a length of 21/2 feet, a width of 11/2 feet, and a height of 4 feet. stella wants to cover the box with wrapping paper. how much paper will sge need?

To get the amount of paper required to cover the box, we find the area of the box. 
The dimensions of the box are as follows:
length=21/2 ft
width=11/2 ft
height=4 ft

Area of the box is given by the formula:
SA=2lw+2lh+2hw
SA=2(21/2×11/2)+2(21/2×4)+2(11/2×4)
SA=2(231/4)+2(42)+2(11/2×4)
SA=115.5+84+44
SA=243.5  ft²
Stella will need 243.5 ft²

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