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Murrr4er [49]
3 years ago
10

PLEASE HELP AND EXPLAIN IT FOR ME :(

Mathematics
2 answers:
ira [324]3 years ago
4 0

Answer:

1,100

Step-by-step explanation:

15*10*2=300

20*15*2=600

20*10=200

300+600+200=1,100

you need to find the surface area which means the area of all the sides except the top(bc i think its open???)

a shortcut i used was multiplying sides that have the same area by 2. for example, the side 15*10, there was another side like that, so i multiplied by two instead of having to solve for the other side individually, does that make sense?

check my math if im wrong

Kobotan [32]3 years ago
3 0

Answer:

15 x 10 x 20 =

Step-by-step explanation:

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garri49 [273]

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