A Cylinder of radius r and height h. The total surface area or TSA includes area of circular top and base as well as the curved surface area or CSA.
Length of rectangle= Circumference of base =
Breadth of rectangle = h
TSA = Area of base + Area of top + CSA of cylinder
Illustration: A solid cylinder has total surface area of 462 Its curved surface area is one-third of its total surface area. Find the radius and height of the cylinder.
Solution: Given: Curved surface area
...................(i)
Now, given that total surface area = 462
Curved surface area
Using equation (i0, we have
As
So,
Hence height of cylinder = 3.5 cm
Using equation (i), we have
and radius of cylinder = r = 2h
= 7 cm
A solid cylindrical tank has total surface area of 462 sq cm. Its curved surface area is one third of its total surface area. Find the radius and the height of the cylinder. | |||
Right Option : B | |||
View Explanation |
If the curved surface area and the radius of a base of a cylinder are 8.8 cm sq and 0.7 cm respectively, then the height of cylinder is _____________ | |||
Right Option : D | |||
View Explanation |
If the diameter of the base of a closed right circular cylinder be equal to its height h, then its whole surface area is ______________ | |||
Right Option : B | |||
View Explanation |
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