RRB NTPC Prelims Model Paper 4 with solutions

Question : 57 of 100

Marks: +1, -0

Two medians AD and BE of ΔABC intersect at G at right angles. If AD = 9 cm and BE = 6 cm, then the length of BD, in cm, is

Solution:

(3)

GD=1/3×AD=1/3×9=3cm

BG=2/3×BE=2/3×6=4cm

now in

△ B G D,

BD=√{GD^2+BG^2}=√{9+16}=5 cm

Go to Question:

Prev Question

Next Question