Since there is right angle (90) degrees, pythagoras theorem could be applied. The side facing the right angle (90) degrees is the hypotenuse (c). 102=82+b2 10×10=8×8+b2 100=64+b2 100−64=b2 36=b2 Square is a number multiplying itself 5×6=b2 b2=b2 Since the powers are the same, the bases are also the same. 5=b The breadth =6cm.