Question

- A rectangular piece of paper having length
of 4.4 cm and breadth 1.5 cm is to be rolled
along its length to form a right circular
cylinder. Find the height and volume of the
right circular cylinder.
stance between the parallel sides)​

Answer 1

Answer:

$the \: hight \: of \: the \: cylinder \:will \: be \: equal \: to \: the \: length \\ of \: the \: rectangle \\ height(h) = 4.4cm \\ the \: breadth \: of \: the \: rectangle \: is \: rolled \: and \: is \\ formed \: to \: be \: the \: circumference \: of \: the \: cylinder(base) \\ 2\pi {r}^{2} = 1.5 \\ = 2 \times 3.14 \times r = 1.5 = r = \frac{1.5}{6.28} = 0.238cm \\ volume \: of \: the \: cyliner = \pi {r}^{2}h \\ = 3.14 \times {(0.238)}^{2} \times 4.4 \\ = 0.782 {cm}^{2} \\ volume \: of \: a \: cylinder = 0.78 {cm}^{2}$