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What is the total surface area of the rectangular prism?​

What is the total surface area of the rectangular prism?​-example-1

1 Answer

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Answer:

Total surface = 102.4 cm^2 (second answer in the list of options)

Explanation:

Notice that we need to add the surface of 4 rectangles, two have smaller sizes than the other two. A pair of rectangles are 7.2 cm x 4 cm = 28.8 cm^2, while the other pair has 7.2 cm x 2 cm = 14.4 cm^2

There are also two equal bases each one of size 4 cm x 2 cm = 8 cm^2

Now we add two of each of the individual surfaces discussed above to complete the total surface area:

2 * 28.8 + 2 * 14.4 + 2 * 8 = 102.4 cm^2

which agrees with the second answer option provided.

User Ron Gross
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