SOLUTION: Please solve this question, A right angled triangle with sides of 3cm,4cm and 5cm is enlarged by by the scale factor 3. What is the area of the new triangle? Regards

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Please solve this question, A right angled triangle with sides of 3cm,4cm and 5cm is enlarged by by the scale factor 3. What is the area of the new triangle? Regards      Log On


   

Question 1105715: Please solve this question,
A right angled triangle with sides of 3cm,4cm and 5cm is enlarged by by the scale factor 3. What is the area of the new triangle?
Regards
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
using the scale factor of 3, the new triangle is
:
9, 12, 15
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the area of the new triangle is 9 * 12 / 2 = 54 cm^2
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the area of the original triangle is 3 * 4 / 2 = 6 cm^2
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