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Arisa [49]
3 years ago
8

The longest side of an obtuse triangle measures 20 cm. The two shorter sides measure x cm and 3x cm

Mathematics
1 answer:
Lorico [155]3 years ago
6 0
Obtuse triangle is a triangle that has an angle that is greater than 90°.

longest side: 20 cm
two shorter sides: x cm and 3x cm

choice given: <span>6.3   6.4   7.0   7.1</span>

Obtuse triangle Pythagorean Theorem

c² > a² + b²

20² > x² + 3x²
400 > 4x²
÷4      ÷4
 100 > x²
   10 > x
  
400 > 4(7.1)²
400 > 4(50.41)
400 > 201.64

The greatest possible value of x is 7.10
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