CBSE Class 9 Answered
44cm length and 18cm breath of revangle paper is round along its length to create a cylinder.then what is its total surface area
Asked by 7308524916parul | 24 Sep, 2018, 07:39: AM
Expert Answer
The rectangular paper 44 cm × 18 cm is round along its length to create a cylinder.
If the sheet is rolled along its length then the circumference will be equal to the length of the rectangle.
The height of the cylinder is 18 cm and circumference is 44 cm.
Circumference = 2r = 44 cm
Therefore total surface area = 2r h = 44 × 18 = 792 cm2
Answered by Yasmeen Khan | 24 Sep, 2018, 10:13: AM