Question

The lateral surface area of a hollow cylinder is 30800 square cm .It is cut along its height and formed a rectangular sheet of width 28 cm

Answer 1

so.....what i have to find......its length....??

Answer 2

Answer:

The length is 1100 cm.

Step-by-step explanation:

The question is

The lateral surface area of a hollow cylinder is 30800 square cm .It is cut along its height and formed a rectangular sheet of width 28 cm. What is the length?

When a hallow cylinder is cut by its height, it forms a rectangle.

Hence lateral surface area of cylinder = area of new rectangular sheet.

Area of rectangle = length * width.

In the above question, height is width hence width = 28 cm.

length * width = 30800

length = 30800 / 28 = 1100 cm.

Hence the length is 1100 cm.