Question

PQR is a right angled triangle at Q.If PQ=9cm ,PR =15 cm ,the length of QR= ___________ cm

Answer 1

Answer:

The length of QR = 12cm.

[In which place theeta is your choice (P or R)].

Step-by-step explanation:

Given,

In right angled ∆PQR which is right angle at 'Q'.

Also given,

PQ = 9cm, PR = 15cm, QR = ?

According to Phythagarous therom,

Hypotenuse = opposite side + adjacent side

PR^2 = PQ^2 + QR^2

(15cm)^2 = (9cm)^2 + QR^2

225cm = 81cm + QR^2

225cm - 81cm = QR^2

144cm = QR^2

√144cm = QR

√12cm × 12cm = QR

12cm = QR

:.QR = 12cm

Therefore, the length of QR = 12cm

Hope it Helps!

Please mark my answer in Brainliest...,