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Trava [24]
3 years ago
9

how much cardboard would you need to construct a rectangular prism shaped box measuring 15 inches by 13 inches by 7 inches

Mathematics
1 answer:
givi [52]3 years ago
6 0
We know that

[surface area]=2*[area of the base]+[perimeter of the base]*height

area of the base=15*13----> 195 in²

perimeter of the base=2*[15+13]----> 56 in
height=7 in
so
[surface area]=2*[195]+[56]*7-----> 782 in²

the answer is
782 in²

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VARVARA [1.3K]

Answer:

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3 years ago
Ellen drove 357.9 miles. Her car gets about 21 miles per gallon. Which is the best estimate of how many gallons of gas Ellen use
olga55 [171]
The best thing to do is to divide the amount she has driven (357.9) by the miles (21)
As you're looking for an estimate, you have to round them.
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360/20= 18
Therefore, Ellen has driven approximately 18 miles
Hope this helps :)
7 0
3 years ago
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3 years ago
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