Question

A hollow cylindrical carton having a curved surface area of 936 cm square is cut along its height and laid flat into a rectangular sheet of width 26cm . find the perimeter of the rectangular sheet formed.​

Answer 1

CSA of the cylinder = area of the rectangle

give one breath of the rectangle = 35 cm

area of rectangle=4375cm²

l×B=4375cm²

l×B=4375/35

l=135cm

parameter of the rectangle=2(l×B)

= 2(35+125)

=2×160

=320m