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Vedmedyk [2.9K]
3 years ago
13

Kaylee found the surface area, in square inches of a rectangular prism by using this formula.

Mathematics
2 answers:
Irina-Kira [14]3 years ago
8 0

Answer:

158 in^2

Step-by-step explanation:

To determine the surface area of a rectangular prism, the Equation is: 

Surface Area  = (length x width + width x height + length height)x 2

The surface area with:

 length of 2(5 x 3), a width of 2(5 x 8), a height of 2(3 x 8)

              SA =  2(15) = 30,  SA = 2(40) = 80, SA = 2(24)= 48, 

                             SA = 30 + 80 + 48

                             SA = 158 square units.

SA = 2LW + 2LH + 2HW

SA = 2(5 x 3) + 2(5 x 8) + 2(3 x 8)

SA = 2(15) + 2(40) + 2(24)

SA = 30 + 80 + 48

SA = 158 in^2

So, your answer is: 158 in^2

PIT_PIT [208]3 years ago
6 0
<h2>Answer:</h2>

<u>The surface area is</u><u> 158 sqr inches</u>

<h2>Step-by-step explanation:</h2>

As Kaylee has already written the formula so we just solve it

= 2(5 × 3) + 2(5 × 8) + 2(3 × 8)

= 2(15) + 2(40) + 2(24)

= 30 + 80 + 48

= 158

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