SOLUTION: A right-angled triangle has an area of 30cm^2. The width of the triangle is n+3cm. The height is 4cm less than the width. Find the value of n.

Question 923837: A right-angled triangle has an area of 30cm^2. The width of the triangle is n+3cm. The height is 4cm less than the width. Find the value of n.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

A right-angled triangle has an area of :
=>
if the width of the triangle is , and the height is less than the width, then we have

=>
go to , plug in and

.........write as
...group
..factor

we need only positive solution and it is =>
now find
=>=>
=>=>
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