Advertisements
Advertisements
Question
Find the total surface area and whose height is 15 cm and the radius of the base is 7 cm.
Solution
\[ \text{ Given: } \]
\[\text{ Height, h = 15 cm } \]
\[ \text{ Radius, r = 7 cm } \]
\[\text{ Total surface area, } S_2 = 2\pi r\left( r + h \right)\]
\[ = 2 \times \frac{22}{7} \times 7 \times \left( 7 + 15 \right)\]
\[ = 44 \times 22\]
\[ = 968 {\text{ cm } }^2 \]
APPEARS IN
RELATED QUESTIONS
Find the volume of a cylinder whose r = 2.8 m, h = 15 m .
Water flows out through a circular pipe whose internal diameter is 2 cm, at the rate of 6 metres per second into a cylindrical tank, the radius of whose base is 60 cm. Find the rise in the level of water in 30 minutes?
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 and the ratio of their curved surfaces.
The trunk of a tree is cylindrical and its circumference is 176 cm. If the length of the trunck is 3 m. Find the volume of the timber that can be obtained from the trunk.
Water flows out through a circular pipe whose internal diameter is 2 cm, at the rate of 6 metres per second into a cylindrical tank. The radius of whose base is 60 cm. Find the rise in the level of water in 30 minutes?
A cylindrical water tank of diameter 1.4 m and height 2.1 m is being fed by a pipe of diameter 3.5 cm through which water flows at the rate of 2 metre per second. In how much time the tank will be filled?
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.
The volume of a cylinder of radius r is 1/4 of the volume of a rectangular box with a square base of side length x. If the cylinder and the box have equal heights, what is r in terms of x?
Find the area of the sheet required to make a cylindrical container which is open at one side and whose diameter is 28 cm and height is 20 cm. Find the approximate area of the sheet required to make a lid of height 2 cm for this container.
The curved surface area of a cylinder is 198cm2 and its base has diameter 21cm. Find the height and the volume of the cylinder.
