Question

find the missing length of the triangle

Answer 1

Use the pythagorean theorem

Answer 2

da wat now

Answer 3

[a^{2}+b^{2} = c^{2} ]

\[c^{2}-b^{2} = a^{2}\]

Answer 4

\[(21)^{2}-(8)^{2} = a^{2}\] ?

Answer 5

19.4

Answer 6

nice work if you want to double check take a look here

\[(21)^{2}-(8)^{2} = 441-64 = 377 \]

to find a we need to take the square root of both sides.

\[377 = a^{2} \]

\[\sqrt{377} = \sqrt{a^{2}} ~~ 19.42~ = a \]