Question

A DEF is a right angled triangle. If DE = 9 cm, EF = 12 cm,
E= 90°, find DF.​

Answer 1

@brainly...

Applying Pythagoras Theorem---

DF=HYPOTENUSE

EF=BASE

FD=PERPENDICULAR

${hypotenuse}^{2}= {base}^{2} + {perpendicular}^{2}$

9^2+12^2=DF^2

81+144=DF^2

255=DF^2

DF=15

Answer 2

Hope it will help you...

Thanks...