Question

in PQR if PQ=PR=25 cm and QR=48 cm, then ar(PQR) = ?​

Answer 1

Answer:

168 sq. cm

Step-by-step explanation:

PQR is an isosceles traingle because it's two sides are equal.

let two equal sides = a

and third side = b

area of triangle PQR= b÷4√(4a^2-b^2)

by putting value of a andb in the formula we get the area i.e. 168 sq. cm

Answer 2

Answer:

draw a perpendicular from P to QR such that it meets QR at S,,and S is the mid point