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one eq is y=2The answer I get if i do it this way is 4pi/9 or 1.89 whereas the marking scheme gives the answer 1.5Pi or 4.71. :/
square = 4
integrate 4x for the limits 0 and 1
you get 4
4(1) - 4(0) =4
then sec eq (3x+1) ^1/2
square = 3x+1
integrate (3/2) x^2 +x apply limits 0 and 1
(3/2) (1)^2 +(1) - (3/2) (0)^2 +(0)
5/2
then (4- 5/2) pi
1.5 pi ^_^