A rectangular paper of length 66 cm and breadth 14 cm is rolled into a

1.	A rectangular paper of length 66 cm and breadth 14 cm is rolled into a cylinder along thelength. Find2017. 28929214the Total Surface Area of the cylinder.14777
Answer» Length of Reactangular paper = 66 cmBreadth of Reactangular paper = 14 cm As Reactangular paper is rolled into cylinder along length then breadth of Reactangular paper will be equal to height of cylinder and length of Reactangular paper will be equal to circumference for circular end of cylinder. Let height of cylinder be hLet radius of cylinder be r So,2pir = 66 cm222/7r = 66r = 66/44 * 7r = 21/2 = 10.5 cm h = 14 cm Total surface area of Cylinder = 2pir(r + h) = 66(10.5 + 14)= 6624.5= 1617 cm^2

A rectangular paper of length 66 cm and breadth 14 cm is rolled into a cylinder along thelength. Find2017. 28929214the Total Surface Area of the cylinder.14777

Answer»

Length of Reactangular paper = 66 cmBreadth of Reactangular paper = 14 cm

As Reactangular paper is rolled into cylinder along length then breadth of Reactangular paper will be equal to height of cylinder and length of Reactangular paper will be equal to circumference for circular end of cylinder.

Let height of cylinder be hLet radius of cylinder be r

So,2*pi*r = 66 cm2*22/7*r = 66r = 66/44 * 7r = 21/2 = 10.5 cm

h = 14 cm

Total surface area of Cylinder = 2*pi*r(r + h) = 66*(10.5 + 14)= 66*24.5= 1617 cm^2

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