a right rectangular prism has a length of 5 cm, a width of 4 cm, and a height of 3 cm. the dimensions of the prism are doubled. what is the surface area of the enlarged prism?

94 cm²

Step-by-step explanation:

The current length is 5 cm; double that is 10 cm;

The current width is 4 cm; double that is 8 cm; and

The current height is 3 cm; double that is 6 cm.

The enlarged prism still has 6 sides:

Ends are (4 cm · 3 cm) each, and there are two of these, so the total area of the ends is 24 cm².

Sides are (5 cm · 3 cm) each, and there are two:  30 cm².

Top and bottom are (5 cm · 4 cm) each, and there are two:  40 cm²

Thus, the total surface area of the enlarged prism is:

(24 + 30 + 40) cm², or 94 cm²

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