## anonymous 3 years ago A Box company is making rectangular boxes that 10 centimeters by 8 centimeters by 5 centimeters. How many of these boxes can the company make using 20,000 square centimeters of cardboard ? Explain how you determined your answer.

1. dan815

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2. Compassionate

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3. dan815

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4. anonymous

Can you guys give me the whole answer ?

5. dan815

u gotta do that part on your own

6. dan815

if you dont learn this stuff, ull just keep falling behind in later grades

7. anonymous

8. dan815

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9. dan815

find the surface area of one box

10. dan815

do you know how to find area of rectangle?

11. anonymous

let me see if i can find the answer ill google it ight

12. anonymous

ok?

13. anonymous

ok

14. anonymous

sorry i tryed my best to look 4 it i couldint find it sry

15. anonymous

thats okay

16. anonymous

u sure

17. anonymous

A Little i need so much help

18. anonymous

let me see if i can find anyone who can help ight

19. anonymous

@april115

20. anonymous

can u help her april

21. anonymous

Sure! i could try

22. anonymous

ight thx

23. anonymous

@ghazi is right the surface area which is 2 (lh) + 2(lw) + 2(wh) Length= 10 Width= 8 and Height= 5 so you do 2 times 10 times 8 plus 2 times 10 times 5 plus 2 times 8 times 5

24. anonymous

then you should be able to multiply those and get your answer

25. anonymous

So... 2 times 10 is 20 times 8 is 160 plus 2 times 10 is 20 times 5 is 100 plus 2 times 8 is 16 times 5 is 80

26. anonymous

160 plus 100 plus 80 is 340

27. anonymous

$boxes=\frac{ 20,000 }{[ 2(10*8)+2(10*5)+2(8*5) ]}=\frac{ 20,000 }{ 340 }=58.82$

28. anonymous

What???

29. anonymous

therefore approximately there are 59 boxes , or 58

30. anonymous

ohhhhh okay i get it

31. anonymous

is that right @ghazi

32. anonymous

$boxes=\frac{ given A }{ calculated (surfaceA)}$ yes thats right

33. anonymous

i agree with ghazi

34. anonymous

A--> area

35. anonymous

u good now Selena

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