Question

Right triangle abc has side lengths 15 cm and 20 cm. what is the length of the hypotenuse?

Answer 1

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Pythagoras Theorem:
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a² + b² = c²

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Find hypotenuse:
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15² + 20² = c²
c² = 15² + 20²
c² = 225 + 400
c² = 625
c = √625
c =25

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Answer: The length of the hypotenuse is 25 cm.
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Answer 2

by Pythagoras theorem
let h be the length of hypotenuse
15^2+20^2=h^2
h^2=625
h=25