Question

PQR is a triangle, right-angled at P. If PQ = 8 cm and PR = 15 cm, then
QR is:
a) 18 cm
b) 27 cm
c) 17 cm
d) 23 cm​

Answer 1

Answer:

Then right answer is 15.5cm

Step-by-step explanation:

By Pythagoras Theorem:-

(PR)^2+(PQ)^2 = (QR)^2

(8)^2+(15)^2 = (QR)^2

16 + 225 = (QR)^2

241 = (QR)^2

(QR) =

$\sqrt{241}$

Now,

(QR) = 15.5cm

Answer 2

Step-by-step explanation:

Applying pythagoras theorem,

OQ^2= PQ^2+PR^2

QR^2=8^2cm+15^2

QR^2=64+225

QR^2=450

Square root of 450= 15

ans: 15