Question

please help me out...

Answer 1

Answer:

surface area of a cuboid=2(lb+bh+lh)

2(6*8+8*3+6*3)

2(48+24+18)

2(90)

180cm^2

Step-by-step explanation:

Answer 2

Answer:

180cm²

Step-by-step explanation:

Its going to have 6 faces. You need to find the area of all six faces and add them up. Actually you only need to find the three unique faces and add them, then double since opposite faces contribute the same area.

So for a box of dimension H by L by W the three faces are H x L, L x W and W x h.

So the total surface area is 2 (hl + lw + wh)

hl= 8×6 =48

lw= 8×3 =24

wh= 6×3 = 18

2(48+24+18)

=180cm²

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