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In △XYZ , XZ=8 , YZ=5 , and XY=7 .

What is the area of the triangle?

 Apr 17, 2020
 #1
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You can use Heron's formula:  Area  =  sqrt( s · (s - a) · (s - b) · (s - c) )

where a, b, and c are the sides

and s is the semiperimeter = (a + b + c) / 2.

 

s = (5 + 7 + 8) / 2  =  10

 

Area  =  sqrt( 10 · (10 - 5) · (10 - 7) · (10 - 8) )

 

And you can finish ...

 Apr 17, 2020

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