Question

A rectangular paper of dimensions 28cm and 22cm,is rolling along its length and a cylinder is formed. Find the volume of cylinder

Answer 1

Answer:

1078 cm³

Step-by-step explanation:

Given,

Length of rectangle = 28 cm

Width of rectangle = 22 cm

Then,

Circumference of Cylinder = 22 cm

${2\pi }r = 22$

Radius = 7/2

Height of cylinder = Length of rectangle = 28 cm

Volume of cylinder

$\pi {r}^{2} h$

$\frac{22}{7} \times { \frac{7}{2} }^{2} \times 28$

$\frac{22}{7} \times \frac{49}{4} \times 28$

= 22 × 49

= 1078 cm³