Mathematics
11 Online
OpenStudy (anonymous):
Find the area of the shape
#2
Picture attached
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OpenStudy (anonymous):
#2
OpenStudy (anonymous):
for parallelogram the area is double the area of a triangle of same base and height
OpenStudy (anonymous):
oh so what would that look like in formula form
OpenStudy (anonymous):
:) you try, let us see
OpenStudy (anonymous):
What was the form for triangle?
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OpenStudy (anonymous):
check the previous question
OpenStudy (anonymous):
okay
OpenStudy (anonymous):
okay the answer is area of parallelogram = height * base = 8 * 14 = 112
OpenStudy (anonymous):
so 112
OpenStudy (anonymous):
yeah
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OpenStudy (anonymous):
aw h
OpenStudy (anonymous):
okay :)
OpenStudy (anonymous):
:)
OpenStudy (anonymous):
I guess you can do #3 yourself
OpenStudy (anonymous):
illl try then see if im right will you ?
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OpenStudy (anonymous):
yeah sure
OpenStudy (anonymous):
okay so 6*6/2 right
OpenStudy (anonymous):
6 is base of one hlf right?
OpenStudy (anonymous):
right
OpenStudy (anonymous):
what is height here?
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OpenStudy (anonymous):
oh , so 12 and 10
OpenStudy (anonymous):
oh nonot right
OpenStudy (anonymous):
yeah total base is 12 correct
OpenStudy (anonymous):
so 12*___?
OpenStudy (anonymous):
but for height is the dotted line
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OpenStudy (anonymous):
do you know Pythagorean theorem?
OpenStudy (anonymous):
yes, but i forgot
OpenStudy (anonymous):
so at the moment then no
OpenStudy (anonymous):
height^2 + Base^2 = Hypotenuse^2
OpenStudy (anonymous):
oh thats right!
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OpenStudy (anonymous):
hence height here is sqrt(10^2 - 6^2) = sqrt(64) = 8
OpenStudy (anonymous):
wiat the answer isnt 8
OpenStudy (anonymous):
hence the area is = 0.5* total base * height = 0.5 * 12 * 8
OpenStudy (anonymous):
oh
48
OpenStudy (anonymous):
yeah
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OpenStudy (anonymous):
awesome