Question

Help for all, will mark brainliest!!!!! :)

Answer 1

Answer:

Number 4: Using Pythagoras Theorem,

$\sqrt{30^2+40^2} =50$

Number 5:

$\sqrt{41^2-40^2}=9$

3:

$\sqrt{11^2+60^2} =61$ It is a right triangle

4:

$\sqrt{9^2+37^2} =38.09$ Not a right triangle

For the last one:

$\sqrt{(\sqrt{20^2+6^2})^2+6^2} =2\sqrt{118}$

Rounded down (because the answer needs to be a whole number) is 21