Question

rectangular paper of length 66cm and breadth 14 cm is rolled into a cylinder along the length. Find the total surface area and volume

Answer 1

Given rectangular sheet of paper is rolled along its breadth length = 28 cm breadth = 22 cm Hence height of cylinder, h = 28 Circumference of the base of cylinder = 2πr = 22 cm 2 × (22/7) × r = 22 Therefore, r = 7/2 = 3.5 cm Volume of cylinder = πr2h = (22/7) × (3.5)2 × 28 = 1078 cu cm Thus the volume of the cylinder is 1078 cu cm.

Answer 2

Answer:

Given,

length=height = 66cm

Breadth = diameter = 14 cm

Radius =14/2 = 7 cm

TSA(Total surface area of a cylinder ) = 2"r(r+h)

2x22/7 x 7(7+66)

44x73=3212cm*2

volume of a cylinder = "r*2h

22/7x7x7x66=10,164cm*3

*TSA ( Total surface area of a cylinder ) =3212 cm*2

*volume of the cylinder = 10,164cm*3