Zadanie 5
The region bounded by the y-axis, y=5, y=10 and y = 30/(x + 2) is rotated through a full turn about the y-axis. Find the resulting solid’s volume.
Calculate areas integrated with respect to y and volumes generated by rotation about either coordinate axis.
Tę umiejętność sprawdza 17 zadań wzorowanych na arkuszach IB z lat 2022–2026.
The region bounded by the y-axis, y=5, y=10 and y = 30/(x + 2) is rotated through a full turn about the y-axis. Find the resulting solid’s volume.
Rotate R through a full turn about the y-axis. Find its volume.
Show that .
If V = 135π2 cm3, find d exactly.
For r > 0, consider the right-hand curve 4x2 + y6 = r6, with 0 ≤ x ≤ r3/2. The region between this curve and the vertical axis is rotated through a full turn about that axis. Find its volume in the form aπrb, with positive rational a, b.
The region , 0 ≤ y ≤ π/2, is revolved through one full turn about the y-axis. Find the exact volume.
The tangent y = −5x touches C at B = (xB, yB). The region between the vertical line x = −1 and the left-hand arc of C, from height yB to height yA, is rotated once about x = −1. Find the resulting volume.
The curve y = 1 + ex/2 for x≥0, the line y=7 and the y-axis enclose a region. Rotate this region through 2π radians about the y-axis. Find the volume of the resulting solid.
Rotate this region once about the y-axis. Find the resulting volume.
Let for . The region below this curve, above the x-axis and between x=0 and is rotated through 2π radians about the x-axis. Show that its volume is π/2.
The region between the y-axis and the curve y = 3ln(x − 1), bounded by y=0 and y=6, is rotated about the y-axis. Find the volume of the resulting solid.
The region under y=f(x), above the x-axis and within the stated interval is rotated through a full turn about the x-axis. Find the volume.
The region between and , cut off by y = 0 and y = π/4, is rotated fully about the y-axis. Find the resulting volume.
Rotate the region between , for , and the y-axis about the y-axis, where R>1. A cylindrical bore centred on that axis leaves a ring whose top and bottom are y=h/2 and y=−h/2. The bore has positive radius. If the…
A bowl’s outer interior wall is obtained by revolving x2 + (y − 5)2 = 25, x≥0 and h≤y≤5, about the y-axis. Coordinates are centimetres. A solid coaxial cylinder of radius 1 cm occupies the centre; water fills only the annular space outside it. A horizontal base…
(i) Show that water at depth h has volume V = π(h3/3 + 3h). (ii) Find the maximum water volume.
The region bounded by the graph of f and the two coordinate axes is rotated once about the x-axis. Find the volume of the resulting solid.
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