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maxonik [38]
3 years ago
7

Pls help me solve this question :

Mathematics
2 answers:
Jobisdone [24]3 years ago
6 0

Answer:

592cm²

Step-by step:

<u><em>To work out the surface area:</em></u>

The formula is Surface Area=2lw+2lh+2hw

So what you do is (21×12)+(21×10)+(21×8)

Which should give you answer to 592cm²

viva [34]3 years ago
3 0

Answer:

B

(2×10×8)+(2×8×12)+(2×10×12)

160+192+240

=592cm2

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