PQR is a triangle, right-angled at P. If PQ = 10 cm and PR = 24 cm, find QR.
It is given in the question that,
PQ = 10 cm
Also,
PR = 24 cm
We have to find QR
We know that,
According to Pythagoras theorem,
In a right angled triangle:
(Hypotenuse)2 = (Perpendicular)2 + (Base)2
By applying Pythagoras theorem in the given question, we get:
(QR)2 = (PQ)2 + (PR)2
(QR)2 = (10)2 + (24)2
(QR)2 = 100 + 576
(QR)2 = 676
Hence,
QR = 
QR = 26 cm
2