SOLUTION: Find the perimeter and the area of a right triangle if the shortest side is 9cm and the longest side is 15cm

Algebra ->  Triangles -> SOLUTION: Find the perimeter and the area of a right triangle if the shortest side is 9cm and the longest side is 15cm      Log On


   

Question 125651: Find the perimeter and the area of a right triangle if the shortest side is 9cm and the longest side is 15cm
Answer by SoOoDumb(14) About Me  (Show Source):
You can put this solution on YOUR website!
Find the hypotenuse. C is the lenght of the hypotenuse.
Photobucket
a%5E2%2Bb%5E2=c%5E2
9%5E2%2B15%5E2=c%5E2
81%2B225=c%5E2
306=c%5E2
sqrt%28306%29=sqrt%28c%5E2%29
17.49=c

a+b+c=perimiter
9+15+17.49=p
41.49=p


%28a%2Ab%29%2F2=area
%289%2A15%29%2F2=area
135%2F2=area
67.5=area