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Mathematics 21 Online
OpenStudy (anonymous):

How to find the area of this Rhombus?

OpenStudy (anonymous):

OpenStudy (anonymous):

we can always divide the rhombus into two equal parts like this.|dw:1371937685454:dw| we know that all the sides of a rhombus are equal.

OpenStudy (anonymous):

AB=BC=CD=DA=8 in. find the area of the triangle ABC. and then twice of that. that's the area of the rhombus.

OpenStudy (anonymous):

32in^2

OpenStudy (anonymous):

???right???

OpenStudy (anonymous):

its \[area=\frac{ 1 }{ 2 }8^{2}\sin 60\] plug in sin60=(sqroot 3)/2 and then twice the area.

OpenStudy (anonymous):

total area= \[8^{2} \frac{ \sqrt{3} }{ 2 }\] \[=32\sqrt{3} inch ^{2}\]

OpenStudy (anonymous):

|dw:1371938226952:dw|

OpenStudy (anonymous):

i did it like that so i timed 8*8 and /2

OpenStudy (anonymous):

AC and BD might not be 8in.

OpenStudy (anonymous):

okay, how do we find the area of a triangle |dw:1371938456320:dw| a and b are the sides of the triangle.

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