Question

∆PQR is right angled at Q. If PQ = 35 cm and PR = 37 cm, then find the length of QR.​

Answer 1

Answer:

Solution,

Here, PQ is the perpendicular and PR is the hypotenius,

Given, P = 35cm

H = 37cm

B =?

Now,

By using Pythagoras theorem. We get,

$b = \: \sqrt{h {}^{2} } - {p}^{2} \\ = \sqrt {37}^{2} - {35}^{2} \\ = \sqrt1369 \: - \: 1225 \\ = \sqrt{144} \\ = 12$

Hence,

The required length QR is 12cm.