Question

Hi everyone, i'm new to openstudy so I hope that I do this right...

Find the value of H in the parallelogram. Round your answer to the nearest tenth.

A. 7.5 in^2
B. 10.8 in^2
C. 27.6 in^2
D. 30.0 in^2
Thanks!

Answer 1

I had to stare at it a while to figure it out. It's all to do with the area of a parallellogram~ you know how to get that?

Answer 2

The formula is a = b x h correct?

Answer 3

That's right. Now, the area, you can easily get by multiplying the base (15) and height (9), and you get 135, yes?

Answer 4

Yes I get 135 :D

Answer 5

Too bad that's not what the question asks for :P
Anyway, what if we take the longer side as our base, the one that measures 18?

As far as THAT base is concerned, the height is not 9, but rather, the unknown value, h.

But the area should stay the same.
What say you?

base times height
18 * h
This should still be 135.
Question is, what value of h would allow 18h to be 135?

Answer 6

lol true, and h would be 7.5 correct?

Answer 7

That's right. Not sure why the unit of measurement in your choices are square inches, though. But correct, in essence, your answer.

Answer 8

i got it correct! Thanks! I appreciate your help :D I noticed theres like this medal thing that you give for best answers, so do I just click that medal?

Answer 9

Well, that'd be much appreciated :P

Answer 10

Alright I just did, thanks for your help!