SOLUTION: The triangle below has base (x − 4) mm, height x mm and area 21 mm 2 . Find the length of side AC

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Question 1109947: The triangle below has base (x − 4) mm, height x mm and area 21 mm 2
. Find the length of side AC
Answer by ikleyn(52754) About Me  (Show Source):
You can put this solution on YOUR website!
.
How far "below" the triangle is ?