Question

find the area of a right angled triangle whose base is 12cm and hypotenuse is 20 cm

Answer 1

hypotenuse^2=base^2+height ^2
20×20=12×12+height ^2
400-144=height ^2
256=height ^2
height =16cm
area of triangle=1/2×base×height
=12×16×1/2
=96cm^2