1 Answer

Sonu Mishra · Answer 1 · 2017-08-25T09:45:56+0000

Surface area for a cuboid of length, l, bredth, b and height h.

= 2*(lb + bh + lh)

for 15 by 7 by 4 1/2 = 15 by 7 by 4.5

Surface area = 2*(15*7 + 15*4.5 + 7*4.5)

= 2*(105 + 67.5 + 31.5)

=2 *(204) = 408

Surface area of box = 408 in²

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