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One leg of a right triangle is increased by 10% and the other leg is decreased by 10%.  By what percent does the area of the triangle change?

 May 30, 2020
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One leg of a right triangle is increased by 10% and the other leg is decreased by 10%.  By what percent does the area of the triangle change?

 

The legs are 5 and 8

 

5 * 8 / 2 = 20 u²                  100%

 

5.5 * 7.2 / 2 = 19.8 u ²         99%

 

4.5 * 8.8 / 2 = 19.8 u²           99%

 

The area of the triangle decreased by 1%  smiley

 May 30, 2020

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