Krishna
0

Step 1:  Make a note of the given information

               Given that, the radius of cylinder(r) required is = 7 cm

                                                                        height (h)  = 35 cm.


Step 2:  Recall the formula for surface area of cylinder

                      Surface area of cylinder = 2 \pi r h

                                                             = 2 * \frac{22}{7} * 7 * 35

                                                             = 1540 cm^2


Step 3: Find the required paper sheets for 100 such cylinders.

                Required sheet to prepare one cylinder =   1540 cm^2

                Required paper sheets for 100 such cylinders  = 100 * 1540

                                                                                           =   154000 cm^2