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Mathematics 7 Online
OpenStudy (lollola):

If the area of parallelogram ABCD = 246 mm2 and h = 20.5 mm, what is the length of the base of triangle ABD? 12 mm 24 mm 123 mm There is not enough information given.

OpenStudy (lollola):

|dw:1455299227159:dw|

OpenStudy (lollola):

Please help

OpenStudy (addicted2anime):

not enough information

OpenStudy (anonymous):

\[a = b.h\] a is area h is height b you have to find?

OpenStudy (anonymous):

Can you do that now?

OpenStudy (lollola):

So do i do area-height to get the base?

OpenStudy (anonymous):

area divided by height will get you base . yes.

OpenStudy (lollola):

Ok thanks

OpenStudy (addicted2anime):

no, because we dont know the area, we know the area of a parallelogram, which is not a triangle, but we do not know the area of the triangle.

OpenStudy (addicted2anime):

therefore there is not enough information

OpenStudy (anonymous):

Area of parallelogram is base * height. height is given she has to find base only.

OpenStudy (anonymous):

what answer you get @LOLLOLA ?

OpenStudy (addicted2anime):

yes but she needs to find the base of the triangle.

OpenStudy (lollola):

12?

OpenStudy (addicted2anime):

non, there is not enough info to find the base of the TRIANGLE.

OpenStudy (addicted2anime):

no*

OpenStudy (anonymous):

Yes there is no enough information. @Addicted2Anime is right .

OpenStudy (addicted2anime):

OHHHH

OpenStudy (anonymous):

Let me draw the picture for you.|dw:1455300078899:dw|

OpenStudy (anonymous):

|dw:1455300173925:dw| x part is missing.

OpenStudy (anonymous):

\[Area = b.a \\ area = b.\sqrt{h^2 - x^2}\] Here x is missing. I was sorry I did not read the question correctly.

OpenStudy (lollola):

The answer is 12

OpenStudy (addicted2anime):

Yes

OpenStudy (lollola):

thanks

OpenStudy (addicted2anime):

np

OpenStudy (addicted2anime):

sorry about all the confusion

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