(a) The area bounded by the curve, above the x-axis, between x = a and x = b is
(i) \(\int\limits_{f(a)}^b ydy\)
(ii) \(\int\limits_a^{f(b)} ydy\)
(iii) \(\int\limits_a^b xdy\)
(iv) \(\int\limits_a^b ydy\)
(b) Find the area of the circle x2 + y2 = 4 using integration.