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Mathematics 8 Online
OpenStudy (anonymous):

Help please.... =*( A trapezoid has an area of 42 and a height that is less than or equal to 6. A. The height of the trapezoid. B. The length of the longer base of the trapezoid.

OpenStudy (anonymous):

which is greater?

OpenStudy (anonymous):

i know the answer i need to know how and why

OpenStudy (anonymous):

Is there any C

OpenStudy (anonymous):

no

OpenStudy (anonymous):

its b because be = 7

OpenStudy (anonymous):

....

OpenStudy (anonymous):

that the answer

OpenStudy (anonymous):

i dont need the answer i need to know how and why

OpenStudy (anonymous):

lol jokin

OpenStudy (kyanthedoodle):

Ok. So we know that the area is 42. And we also know that the height is 6 or less. Normally whenever people try to figure out the area of a trapezoid, they combine the two bases, divide it by 2 and then multiply it by the height.

OpenStudy (kyanthedoodle):

To do a reverse effect, try dividing 42 by 6.

OpenStudy (anonymous):

7

OpenStudy (kyanthedoodle):

Ok. That's the bases combined divided by two, if you undo the dividing (7 x 2 = 14) then chances are, the longer base is bigger than the height.

OpenStudy (anonymous):

oh... why is that

OpenStudy (kyanthedoodle):

Well, even when they were divided by 2, it was still bigger than 6, and the height could very well be less than 6. And because the longer base has to be...well, longer, it's definitely more than 7.

OpenStudy (anonymous):

oh i see

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