Question

If a square paper of side 25 cm is rolled to form a cylinder then its curved surface area is

Answer 1

Answer:= 625 cm^2

Step-by-step explanation: h= side of square = 25 cm

                                     

      circumference of square=side of square= 25 cm

we can alo write is as = 2 x 22/7 x r = 25 cm

CSA= 2 x 22/7 x r x h

25 x 25 = 625 cm ^2

Answer 2

Given : Length of a side of the square paper = 25 cm

To find : If the square paper rolled to form a cylinder then its curved surface area.

Solution :

We can simply solve this mathematical problem by using the following mathematical process.

Here, we will assume that no overlapping of paper has been occurred. And, the area of the paper will be the surface area of the cylinder as well.

Area of the square paper = (side)² = (25)² = 625 cm²

Surface area of the cylinder = Area of the square paper = 625 cm²:

Hence, the surface area of the cylinder is 625 cm²