(a) x2 + y² = 4 and x + y = 2
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1
Answer:
Required area = Area ACBA = Area OACBO - Area OAB
=∫
0
2
4−x
2
dx−∫
0
2
(2−x) dx
=[
2
x
4−x
2
+
2
4
sin
−1
2
x
]
0
2
−[2x−
2
x
2
]
0
2
=2×
2
π
−[4−2]=π−2 units
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