Question

Find the missing length. Round to the nearest tenth, if necessary.

Answer 1

The missing length is: 19.4

Explanation:

according to pythagorean theorem, a^2 + b^2 = c^2

the hypotenuse is 21 and side and the short leg is 8

c²-b²=a²

21²-8²

441-64

377

take the square root of 377

it is 19.41

which rounds to 19.4

x=19.4