I don't know what to do. Please inlcude solution please 😭💙

Question

Find the volume of solid generated if the area bounded by each of the following curves is revolved about the indicated axis/line.

x = 9 - y² , x = 9 ; y = 0

Answer 1

Please specify by what curves is bounded this region and by what line/axis it revolving. Then I will solve it

Sorry, thank you.

Yefim

Now I hope Know. We using Disk Method: y = (9 - x)^1/2, 0 ≤ x ≤ 9 and rotation about x-axis(y = 0)

Volume V = ∫₀⁹π(9 - x)dx = π(9x - x²/2)₀⁹ = π(81 - 81/2) = 81π/2 ≈ 127.235