A rectangular piece of paper of width 20 cm and length 44 cm is rolled along its width to form a cylinder. What is the volume of the cylinder so formed?
The length of the rectangle becomes the circumference of the base of the cylinder.
∴ 2π r = 44, where r is the radius of the cylinder.
... r =
= 7 cm
The width of the rectangle becomes the height of the cylinder,
i.e. h = 20 cm.
... Volume = π r2h =
× 7 × 7 × 20 cm3 = 3080 cm3
∴ 2π r = 44, where r is the radius of the cylinder.
... r =
= 7 cm The width of the rectangle becomes the height of the cylinder,
i.e. h = 20 cm.
... Volume = π r2h =
× 7 × 7 × 20 cm3 = 3080 cm3 AI is thinking…
Couldn't generate an explanation.
Generated by AI. May contain inaccuracies — always verify with your textbook.