One leg of a right triangle is 3.2 centimeters long. The length of the second leg is 5.7 centimeters. What is the length of the hypotenuse?

2 Answers
Dec 1, 2016

Hypotenuse of right triangle is 6.54(2dp)6.54(2dp) cm long.

Explanation:

Let first leg of righr triangle be l_1 = 3.2l1=3.2cm.

Second leg of righr triangle be l_2 = 5.7l2=5.7cm.

Hypotenuse of a right triangle is h=sqrt(l_1^2+l_2^2) = sqrt(3.2^2+5.7^2)=sqrt42.73= 6.54(2dp)h=l21+l22=3.22+5.72=42.73=6.54(2dp)cm.[Ans]

Dec 1, 2016

6.5 cm

Explanation:

The Pythagorean Theorem defines the relationship of the sides of a right triangle. It is:
a^2 + b^2 = h^2a2+b2=h2 where a and b are the lengths of the sides, and h is the length of the hypotenuse.
(3.2)^2 + (5.7)^2 = h^2(3.2)2+(5.7)2=h2
10.24 + 32.49 = h^2h2
42.73 = h^2h2
h = 6.5 cm