Let a circle 
be obtained on rolling the circle 
upwards 4 units on the tangent 
to it at the point 
. Let 
be the image of 
in 
. Let 
and 
be the centers of circles 
and 
respectively, and 
and 
be respectively the feet of perpendiculars drawn from 
and 
on the 
-axis. Then the area of the trapezium AMNB is:
Text Solution
Verified by ExpertsA
point lies on line 
have distance 4 unit from 
.
Slope of line 
is -1 .
i.e. 
then 
for point 
and 
for point A we take +ve sign
for point 
we take -ve sign
area of trapezium 
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