Arectangular prism has the following dimensions. length: 8 cm width: 13 cm height: 10.5 cm if all the dimensions of the prism are doubled, what will be its new surface area?

2596 cm²

Step-by-step explanation:

For this problem, it can be easiest to work with the doubled numbers. The area is given by ...

... A = 2(LW +H(L+W))

Filling in values that are twice those given, the area of the new prism is ...

... A = 2((16 cm)(26 cm) +(21 cm)((16 +26) cm))

... = 2(416 cm² +882 cm²)

... A = 2596 cm²

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