Question

Find the missing side b. Round your answer to the nearest tenth if needed

Answer 1

Answer:

  b = 20

Step-by-step explanation:

This is a right triangle with the ratio of the given sides being ...

  15 : 25 = 3 : 5

This means it is a 3:4:5 right triangle. The side ratios are ...

  a : b : c = 3 : 4 : 5 = 15 : 20 : 25

The missing side length is b = 20.

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You can also figure this using the Pythagorean theorem.

  c² = a² + b²

  25² = 15² +b²

  625 -225 = b² = 400

  b = √400 = 20

The missing side length is 20.