In △JKL, KM is an altitude.

Question

anonymous · Answer

What is the length, in units, of JK? 

6 
4

anonymous · Answer

Here are the last 2 choices.

anonymous · Answer

Is the correct answer the 3rd one?

phi · Answer

you do these problems by finding similar triangles and setting up a ratio between corresponding sides.

phi · Answer

all 3 triangles, the 2 little ones, and the big outer one are similar to each other.

anonymous · Answer

4th not 3rd

phi · Answer

all 3 triangles have 3 sides.  we can label the sides:   hypotenuse,  long leg and short leg

for example, in triangle JKM,  side JK is the hypotenuse,
side JM is the "long side"  and side KM is the short side.

anonymous · Answer

Oh ok

anonymous · Answer

im guessing your in Geometry?

anonymous · Answer

Yes unfortunately

anonymous · Answer

Thank you everyone for the help

anonymous · Answer

lol....ikr.....here these should help you with things you cant get... Mathway.com http://www.mathworksheetsgo.com/triangle-calculators/area-of-triangle-calculator-online.php http://easycalculation.com/area/polygon.php http://www.basic-mathematics.com/area-of-a-circle-calculator.html