Question

find the unknown sides x of the following right angle triangle by Pythagoras theorem​

Answer 1

hypotenuse² =base ²+altitude²

=9²+12²

x²=81+144=225

x=square root of 225

=15

x=15

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Answer 2

Base (B) = 9 cm

Perpendicular (P) = 12 cm

Hypotenuse (H) = x

By Pythagoras Theorem :-

(H)² = (B)²+(P)²

x² = 9²+12²

x² = 81+144

x² = 225

x = √225

x = 15 cm

The unknown side (x) is 15 cm.