Question

construct a right angled triangle in which angle B=90°,BC=4cm and hypotenuse CA=5cm

Answer 1

first by Pythagoras theorem find AB which is 3cm then:
a) draw BC and make 90digree on it.
b) cut AB of 3cm.
c) join A and C. it may of 5cm

Answer 2

The answer is in the image.