Question

Find the length of the third side. If necessary, round to the nearest tenth.

18

30

Answer 1

24

Explanation:

`let \: the \: length \: of \: \: the \: third \: side \: = y \\ using \: pythaoras \: theorem \: \\ 30 {}^(2) = y { }^(2) + 18 {}^(2) \\ y {}^(2) = 30 {}^(2) - 18 {}^(2) \\ y {}^(2) = 900 - 324 \\ y {}^(2) = 576 \\ y = √(576) \\ y = 24 \\ lenht \: of \: the \: third \: side = 24`