Question

the length of each side of a cube is 3x+10 Write a polynomial in standard form to represent the surface area of the cube

Answer 1

Answer:  54x^2+360x+600

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Explanation:

One square face has an area of

(length)*(width) = (3x+10)(3x+10) = 9x^2+30x+30x+100 = 9x^2+60x+100

after using the FOIL rule

Multiply that by 6 to get the total area of all 6 faces

6*(9x^2+60x+100) = 54x^2+360x+600

The surface area units are in square feet.