Question

Triangle ABC is right -angled at vertex A. Calculate the length of BC, if :

AB =1.8 cm and AC= 2.4 cm

Answer 1

$\angle BAC={90}^{\circ }$
$B{C}^2=A{B}^2+A{C}^2$ (Using Pythagoras Theorem)
$B{C}^2=(1.8{)}^2+(2.4{)}^2$
$B{C}^2=3.24+5.76$
$B{C}^2=9$
$BC=3cm$