Q)
(chatquestion)...Example 1 Find the area enclosed by the circle x + y = a.
ce
Solution From Fig 8.5, the whole area enclosed
by the given circle
B(0, a)
= 4 (area of the region AOBA bounded by
the curve, x-axis and the ordinates x =
%3D
0 and
x = a) [as the circle is symmetrical about both
x-axis and y-axis]
X'
= 41 ydx (taking vertical strips)
= 4[, Va -x° dx
%3D...(Why we take 4 here)
...
