Question

The three angles of quadrilateral are in ratio 1:5:6.The mean of these angles is 64.Find the fourth angle.​

Answer 1

Answer

168°

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Let the angle b x.

Ratio=x, 5x,6x

Mean=(x+5x+6x)/3

64=12x/3

64=4x

X=64/4

=16

First angle=16

Second angle and =5*16=80

Third angle=6*16=96

Now

16+80+96+ fourth angles=360(sum quadrilateral angles is 360)

Fourth angles =360-(96+96)

=360-192