The length of each side of an equilateral triangle A B C ABC A BC is 3 cm. Let D D D be a point on B C BC BC such that the area of triangle A D C ADC ...

Question

The length of each side of an equilateral triangle

ABCABC
is 3 cm. Let
DD
be a point on
BCBC
such that the area of triangle
ADCADC
is half the area of triangle
ABDABD
. Then the length of
ADAD
, in cm, is:

Options

A.

√6

B.

√5

C.

√8

D.

√7

cat 2022area ratioaltitudeequilateral triangle

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