Question

If you get this correct I'll make you a branliest!!!

Answer 1

Answer:

$= 912 {(cm)}^{2}$

Step-by-step explanation:

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

according to ques...

$2(12 \times 8 + 8 \times 18 + 18 \times 12)$

$=2(96 + 144 + 216)$

$= 2(456)$

$= 912 \: {(cm)}^{2}$

i hope it will help u mate❤❤$\bf\huge{\underline{\red{❤Good\: \:Night❤}}}$

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Answer 2

LSA=2(l+b)h
= 2(12+8)18
=32 x 20= 320 x 2= 640cm^2

TSA= 2(lb+bh+lb)
2((12.8)+(8.18)+(12.18)
Do the math and voila :))