Question

PQR is a right angled triangle in which PQ = QR. If the hypotenuse of the triangle is 20 cm, then what is the area (in cm2) of the triangle PQR?​

Answer 1

Answer:

96 cm square because 12 square + 16 square

Answer 2

Using Pythagoras Theorm:

H^2 =P^2+B^2

PR^2 = PQ^2+QR^2

(20)^2= 2(PQ)^2--{Given PQ =QR}

400^2=2(PQ)^2

2(PQ)^2=400

2(PQ)= ROOT400

2PQ= 20

PQ = 20 / 2

PQ= 10

Nd QR =10

Area = 1/2 B × H

so, 1/2 × 10 ×10

= 50cm^2