Question

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

Answer 1

Answer:

168

Step-by-step explanation:

1:5:6*64

1x+5x+6x=12x*64

mean= sum of observation/no. of observation.

so, 12x/3*64= 16

x= 16

5x= 16*5= 80

6x= 16*6 = 96

so sum of all the interior angles in quadtrilateral= 360 degree.

16+80+96-360

=> 168 degree.

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