Area enclosed by the parabola \[ay=3({{a}^{2}}-{{x}^{2}})\] and x-axis is

Area enclosed by the parabola \[ay=3({{a}^{2}}-{{x}^{2}})\] and x-axis

1.	Area enclosed by the parabola \[ay=3({{a}^{2}}-{{x}^{2}})\] and x-axis is
A.	\[4\,{{a}^{2}}\]sq. unit
B.	\[12\,{{a}^{2}}\]sq. unit
C.	\[4\,{{a}^{3}}\]sq. unit
D.	None of these
Answer» B. \[12\,{{a}^{2}}\]sq. unit