Question: Computing surface areas find the area of the surface generated when the given curve is revolved about the given access: 7. y = 3x +4,

Computing surface areas find the area of the surface generated when the given curve is revolved about the given access:

7. y = 3x +4, for 0/< x /<6; about x axis.

9. y = 8sqrtx, for 9/< x /<20; about x axis.

11. y = (3x)^1/3, for 0 /< x /< 8/3 ; about the y axis.

13. y = sqrt(1-x^2), for -1/2/< x/<1/2; about the x axis.

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