Question

a regular piece of paper is 55cm long and 22cm wide if a cylinder is formed by rolling the paper along its length ,then radius of the base of the cylinder is​

Answer 1

Answer:

Step-by-step explanation:

Length of the rectangular paper will be height of the cylinder and width of the rectangular paper is circumference of  the cylinder

∴2πr=10cm and h=22cm

Now volume of the cylinder

=πr  

2

h

7

22

​  

×  

2π

10

​  

×  

2π

10

​  

×22cm  

3

 

=  

7

22

​  

×  

2

10

​  

×  

22

7

​  

×  

2

10

​  

×  

22

7

​  

×22cm  

3

 

=175cm  

3