Question

19) A rectangular piece of paper of width 30 cm
and length 77 cm is rolled along its width, to
form a cylinder. What is the volume of the
cylinder so formed?​

Answer 1

Answer:-

• volume of cylinder formed is 14148.75cm³

step-by-step explaination:-

Given:-

• width of rectangular paper = 30cm.

• length = 77cm

length of rectangle = circumference of circle of cylinder

and width of rectangle = height of cylinder

so ,

• => 77 = 2πr

• => 77 × 22/7 × 2 = r

• 49/4 = r

now,

volume of cylinder = πr²h

=22/7 × 49/4 × 49/4 × 30

= 14148.75cm³