Question

the curves cy²=x³ and y²=ax (where a>0 and c>
0) intersect at the origin O and at point P in the first quadrant. The areas of the regions enclosed by the arcs OP, the x axis and the ordinate through P are A1 and A2 for the two curves; the volumes of the two solids formed by rotating these regions through four right angles about x axis are V1 and V2, respectively. Prove that A1/A2=3/5 and V1/V2=1/2.

Answer 1

i have partly solved it but stuck on simplifying it

Answer 2

ok