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Mathematics 19 Online
OpenStudy (i_need_help_please):

Help with quick question on area of parallelogram.

OpenStudy (i_need_help_please):

OpenStudy (i_need_help_please):

@phi

OpenStudy (phi):

do you know the formula for the area of a parallelogram ?

OpenStudy (i_need_help_please):

its just b*h

OpenStudy (i_need_help_please):

i just think im overthinking this way to much and it's confusing me.

OpenStudy (phi):

so in this problem you know b*h = 42

OpenStudy (i_need_help_please):

yes

OpenStudy (phi):

if we replace b with ⅓ of b or b/3 we get b/3 * h = (b*h)/3

OpenStudy (i_need_help_please):

okay

OpenStudy (phi):

if we replace h with 2h (i.e. twice as long) we would get Area= b/3 * 2*h = (b*h) * ⅔ but we know what b*h is , so we can find the area of this new parallelogram

OpenStudy (phi):

confused ?

OpenStudy (i_need_help_please):

kinda but im following you, i just dont know where to go next.

OpenStudy (i_need_help_please):

@phi

OpenStudy (phi):

if you know b*h = 42 and we a draw a new shape, with the same h, but b is ½ as big any idea what the area of the new shape is ?

OpenStudy (i_need_help_please):

no. ive never come across a problem like this. it makes me overthink.

OpenStudy (phi):

ok, with pictures: |dw:1463432322096:dw|

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