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9)7 pointsWhat is the surface area of the jewelrybox that would need to be wrapped withwrapping paper?A. 146 cm2B. 292 cm2C. 336 cm2D. 672 cm217 cm6 cm8 cmОАОвOD

97 pointsWhat is the surface area of the jewelrybox that would need to be wrapped withwrapping paperA 146 cm2B 292 cm2C 336 cm2D 672 cm217 cm6 cm8 cmОАОвOD class=

Respuesta :

Given a box with dimensions l by w by h,

then the total surface area is given by

[tex]\text{total surface area = }2(lw+lh+wh)[/tex]

In this case,

[tex]l=8\operatorname{cm},w=6\operatorname{cm},h=7\operatorname{cm}[/tex]

Therefore,

[tex]\text{ total surface area = }2(8\times6+8\times7+6\times7)=2(48+56+42)=2\times146=292\operatorname{cm}^2[/tex]

The right choice is B

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