What is the surface area of a rectangular prism if the lenth is 8.3 the weith is 2 and the hight is 5

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Mathematics

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3 November, 19:15

What is the surface area of a rectangular prism if the lenth is 8.3 the weith is 2 and the hight is 5

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Answers (2)

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Jamari Colon · Answer 1

A rectangular prism has 6 faces.

Area of middle 4 faces:

8.3x2 = 16.6

16.6x4 = 66.4

Area of 2 faces on the sides:

2x5=10

10x2=20

So surface area = 66.4+20 = 86.4

Answer: 86.4cm^2

Baker · Answer 2

S = 2lw + 2lh + 2wh

S = 2 (8.3) (2) + 2 (8.3) (5) + 2 (2) (5)

S = 33.2 + 83 + 20

S = 136.2cm²