A triangle has sides of length 7 cm and 11 cm.If the triangle is a right triangle,which of the following could be the length of the third side?
A) 11 cm
B) 8 cm
C) 16 cm
D) 17 cm
E) 7 cm

Question

A triangle has sides of length 7 cm and 11 cm.If the triangle is a right triangle,which of the following could be the length of the third side?
A) 11 cm
B) 8 cm
C) 16 cm
D) 17 cm
E) ​7 cm

Quizplus · Accepted Answer

For a right triangle, the Pythagorean theorem applies: a² + b² = c². If 11 cm is the hypotenuse, the third side could be √(11² - 7²) = √72 ≈ 8.49 cm, so 8 cm is a possible length.

A Triangle Has Sides of Length 7 Cm and 11