Advertisements
Advertisements
Question
Total surface area of a cylinder of radius h and height r is ______.
Solution
Total surface area of a cylinder of radius h and height r is 2πh(r + h).
Explanation:
Given, radius of cylinder = h and height of cylinder = r
... Total surface area of a cylinder = Curved surface area + Area of top surface + Area of base
= 2 × π × Radius × Height + π(Radius)2 + π(Radius)2
= 2πhr + πh2 + πh2
= 2πrh + 2πh2
= 2πh(r + h)
APPEARS IN
RELATED QUESTIONS
The area of the base of a right circular cylinder is 616 cm2 and its height is 2.5 cm. Find the curved surface area of the cylinder.
The radii of two cylinders are in the ratio 2 : 3 and their heights are in the ratio 5 : 3. Calculate the ratio of their volumes.
In the middle of a rectangular field measuring 30m × 20m, a well of 7 m diameter and 10 m depth is dug. The earth so removed is evenly spread over the remaining part of the field. Find the height through which the level of the field is raised.
The curved surface area of a cylinder is 1320 cm2 and its base had diameter 21 cm. Find the height and the volume of the cylinder.
Find the length of 13.2 kg of copper wire of diameter 4 mm, when 1 cubic cm of copper weighs 8.4 gm.
The sum of the radius of the base and height of a solid cylinder is 37 m. If the total surface area of the solid cylinder is 1628 cm2. Find the volume of the cylinder.
Write the number of surfaces of a right circular cylinder.
The diameter of a garden roller is 1.4 m and it is 2 m long. How much area will it cover in 5 revolutions? (Take π = 22/7)
A cylindrical container with internal diameter of its base 20 cm, contains water upto a height of 14 cm. Find the area of the wet surface of the cylinder.
The external radius and the length of a hollow wooden log are 16 cm and 13 cm respectively. If its thickness is 4 cm then find its T.S.A
