volume by slicing disk and washer

Describe the cross section.

• triangle
• rectangle
• trapezoid
• square

Tags

CCSS.7.G.A.3

• disk
• washer
• shell

• disk
• washer
• shell

Find the volume of when the region bounded by y = x³, x = 4 and the x-axis is revolved about the x-axis.

• 2048π/5

• 3072π/5

• 1024π/5

• 64π

What is the volume of the solid formed in the second quadrant bounded by the curves         y = 9 – x², the x-axis and the y-axis when it is rotated about the line x = 1?

• 153π/2
• 81π/2
• 648π/5
• 45π/2