Question

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

Answer 1

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

Answer 2

Answer:

The surface area is 158 sqr inches

Step-by-step explanation:

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