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s344n2d4d5 [400]
3 years ago
9

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

Mathematics
1 answer:
Nat2105 [25]3 years ago
7 0

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

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