Question

HELP ME PLEASE ITS IMPORTANT!!!

Answer 1

Explanation:

Since both are right triangles, we can use Pythagoras

`{a}^(2) + {b}^(2) = {c}^(2)`

For the first one:

`{3}^(2) + {10}^(2) = {c}^(2)`

`9 + 100 = √(109 ) = 10.4`

For the second one:

`{20}^(2) + {21}^(2) = {c}^(2)`

`400 + 441 = √(841) = 29`

Answer 2

Answer:29

Explanation:

step 1:
`a^(2)`+
`b^(2)`=
`c^(2)`

=
`21^(2)`+
`20^(2)`=841

step 2:
`\sqrt{841`=29