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Geometry 19 Online
OpenStudy (anonymous):

A drive way is 30 feet long 10 feet wide and 3 inches thick how many yards of concrete will it take to cover it

OpenStudy (mathmate):

A "yard" of concrete is a common misnomer for a "cubic yard" of concrete. So you are calculating the volume of a rectangular prism, 30 feet by 10 feet by 3/12 foot high. If you calculate everything in feet, do not forget to divide by 27 to get the number of cubic yards. An alternative is to divide EVERY foot dimensions by 3 to get the measurements in yards.

OpenStudy (anonymous):

What is the answer

OpenStudy (anonymous):

How did you get 3 1/2 ft from 3 inches high

OpenStudy (mathmate):

It was meant to be: 3"/12" = 0.25'

OpenStudy (anonymous):

Can you work the problem out so I can see it. Step by step.

OpenStudy (mathmate):

Do you know how to find the volume of a rectangular prism? |dw:1405268155310:dw|

OpenStudy (anonymous):

Is it l× w × h

OpenStudy (mathmate):

Exactly, so you can proceed to do the calculation and get the answer! Good job!

OpenStudy (anonymous):

How did you get . 25 from 3 inches thick

OpenStudy (anonymous):

good question , you have to convert inches into feet, Remember to do a calculation all units must be same 3 inches = 0.25 feet

OpenStudy (anonymous):

Would that be 3.50 divided by 12. It has been 30 years since I have done any of this.

OpenStudy (anonymous):

I meant 3 ÷ 12

OpenStudy (anonymous):

Is the answer 90 sq yards

OpenStudy (anonymous):

30 years?

OpenStudy (anonymous):

answer is 25 yards ^3

OpenStudy (anonymous):

Yes maybe longer.

OpenStudy (anonymous):

Let me try again. Thank you

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