MATH
posted by Anonymous on .
Two extension ladders are leaning at the same angle against a verticl wall. The 3m ladder reaches 2.4m up the wall. How much farther up the wall does the 8m ladder reach?

A square has a perimeter of 12 m.how many possible lengths are there for each side? List them and explain your answer

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You can make a proportion out of this.
(2.4/3) = (x/8)
Solve for x.
If you are to use trig, then
cos angle = 2.4/3, solve for angle.
and cos angle = x/8
solve for x. 
thank you