1. Your mother asks you to paint her jewelry box, including the bottom. To find the surface area (S.A) of the jewelry box, you can use the formula S.A = 2wl + 21h + 2wh, where / is the length, w is the width, and his the height. What is the surface area of the jewelry box in terms of x?
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Answer:
S.A=6x^2 + 27x + 46
Step-by-step explanation:
S.A=2wl+21h+2wh
S.A = 2(x)(2x + 3) + 21(x + 2) + 2(x)(x + 2)
S.A=2x(2x+3)+21x+42+2x(x+2)
S.A=4x^2+6x+21x+42+2x^2+4
S.A=6x^2+27x+46