# PQR is a triangle in which PQ=PR=4cm and angleP=90?.Find the area of ?PQR and the length of the perpendicular from P to QR

area of triangle PQR = 1/2 (4)^2 = 8 cm^2

altitude from P to QR = 2*area of PQR /QR = 2*8 /4 sqrt 2 = 4/sqrt 2 = 2 sqrt 2 cm.

area of triangle PQR = 1/2 (4)^2 = 8 cm^2

altitude from P to QR = 2*area of PQR /QR = 2*8 /4 sqrt 2 = 4/sqrt 2 = 2 sqrt 2 cm.

What are you looking for?