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WestFarmer · Answer 1 · 2023-11-27T11:34:23+0000

Given a box with dimensions l by w by h,

then the total surface area is given by

$\text{total surface area = }2(lw+lh+wh)$

In this case,

$l=8\operatorname{cm},w=6\operatorname{cm},h=7\operatorname{cm}$

Therefore,

$\text{ total surface area = }2(8*6+8*7+6*7)=2(48+56+42)=2*146=292\operatorname{cm}^2$

The right choice is B