Question

a rectangular piece of paper 11 cm × 4 cm is folded without overlapping to make a cylinder of height 4 cm. find the volume of the cylinder.

Answer 1

☆Hello friend☆

A rectangular sheet is of 11 cm × 4 cm dimensions.

After rolling if breadth that is 4 cm becomes height, means sheet is rolled along its breadth.

So, Circumference is 11 cm

11 cm = 2 × 22/7 × r

11 cm × 7/44 = radius

77 /44 cm = r

Volume = 22/7 × 77/44 cm × 77/ 44 cm × 4 cm

= (1 × 11 × 77/44 × 2) cm^3
= (1 × 1 × 77/ 2 ) cm^3
= 38.5 cm^3

Hope it helps☺

Answer 2

Step-by-step explanation:

A rectangular sheet is of 11 cm × 4 cm dimensions.

After rolling if breadth that is 4 cm becomes height, means sheet is rolled along its breadth.

So, Circumference is 11 cm

11 cm = 2 × 22/7 × r

11 cm × 7/44 = radius

77 /44 cm = r

Volume = 22/7 × 77/44 cm × 77/ 44 cm × 4 cm

= (1 × 11 × 77/44 × 2) cm^3

= (1 × 1 × 77/ 2 ) cm^3

= 38.5 cm^3