English

Find the Capacity of a Cylindrical Container with an Internal Diameter of 28 Cm and a Height of 20 Cm.

Advertisements
Advertisements

Question

Find the capacity of a cylindrical container with an internal diameter of 28 cm and a height of 20 cm.

Sum
Advertisements

Solution

Diameter = 28 cm
Radius = `28/2` cm = 14 cm
Height = 20 cm
Volume = πr2h = `22/7` x 14 x 14 x 20
Volume = 12320 cm3

shaalaa.com
  Is there an error in this question or solution?
Chapter 23: Surface Area, Volume and Capacity - Exercise 21 (D) [Page 243]

APPEARS IN

Selina Concise Mathematics [English] Class 8 ICSE
Chapter 23 Surface Area, Volume and Capacity
Exercise 21 (D) | Q 6 | Page 243

RELATED QUESTIONS

The floor of a rectangular hall has a perimeter 250 m. If the cost of panting the four walls at the rate of Rs.10 per m2 is Rs.15000, find the height of the hall.

[Hint: Area of the four walls = Lateral surface area.]


A small indoor greenhouse (herbarium) is made entirely of glass panes (including base) held together with tape. It is 30 cm long, 25 cm wide and 25 cm high. How much of tape is needed for all the 12 edges?


Shanti Sweets Stall was placing an order for making cardboard boxes for packing their sweets. Two sizes of boxes were required. The bigger of dimensions 25 cm × 20 cm × 5 cm and the smaller of dimensions 15 cm × 12 cm × 5 cm. For all the overlaps, 5% of the total surface area is required extra. If the cost of the cardboard is Rs 4 for 1000 cm2, find the cost of cardboard required for supplying 250 boxes of each kind.


Daniel is painting the walls and ceiling of a cuboidal hall with length, breadth, and height of 15 m, 10 m, and 7 m, respectively. From each can of paint, 100 m2 of area is painted. How many cans of paint will she need to paint the room?


Mary wants to decorate her Christmas tree. She wants to place the tree on a wooden block
covered with coloured paper with picture of Santa Claus on it. She must know the exact
quantity of paper to buy for this purpose. If the box has length, breadth and height as 80
cm, 40 cm and 20 cm respectively. How many square sheets of paper of side 40 cm would
she require?


The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost
of white washing the walls of the room and the ceiling at the rate of Rs. 7.50 m2.


The dimensions of a rectangular box are in the ratio of 2 : 3 : 4 and the difference between the cost ofcovering it with sheet of paper at the rates of Rs. 8 and Rs. 9.50 per m2 is Rs.1248. Find the dimensions of the box.


Find the volume of a cuboid whose length = 15 cm, breadth = 2.5 dm, height = 8 cm.


An ice-cream brick measures 20 cm by 10 cm by 7 cm. How many such bricks can be stored in deep fridge whose inner dimensions are 100 cm by 50 cm by 42 cm?


The length , breadth and height of a room are 5 m, 4.5 m and 3 m, respectively. Find the volume of the air it contains.


The rainfall on a certain day was 6 cm. How many litres of water fell on 3 hectares of field on that day?


Find the surface area of a cuboid whose length = 10 cm, breadth = 12 cm, height = 14 cm.


Find the surface area of a cuboid whoselength = 3.2 m, breadth = 30 dm, height = 250 cm.


If the volumes of two cubes are in the ratio 8: 1, then the ratio of their edges is


The length of the longest rod that can be fitted in a cubical vessel of edge 10 cm long, is


The cost of constructing a wall 8 m long, 4 m high and 10 cm thick at the rate of Rs. 25 per m3 is


If the sum of all the edges of a cube is 36 cm, then the volume (in cm3) of that cube is


If V is the volume of a cuboid of dimensions xyz and A is its surface area, then `A/V`


Length, breadth and height of a cuboid shape box of medicine is 20 cm, 12 cm and 10 cm respectively. Find the surface area of vertical faces and total surface area of this box.


The dimensions of a Cinema Hall are 100 m, 60 m, and 15 m. How many persons can sit in the hall if each requires 150 m3 of air? 


A wall 9 m long, 6 m high and 20 cm thick, is to be constructed using bricks of dimensions 30 cm, 15 cm, and 10 cm. How many bricks will be required?


The length, breadth, and height of a room are 6 m, 5.4 m, and 4 m respectively. Find the area of :
(i) its four-walls
(ii) its roof.


The curved surface area of a cylinder of height 14 cm is 88 cm2. Find the diameter of the base of the cylinder.


The floor of a rectangular hall has a perimeter 250 m. If the cost of painting the four walls at the rate of ₹ 10 per m2 is ₹ 15,000, find the height of the hall.


In a building, there are 24 cylindrical pillars. For each pillar, the radius is 28 m, and the height is 4 m. Find the total cost of painting the curved surface area of the pillars at the rate of ₹ 8 per m2.


The dimensions of a cuboidal box are 6 m × 400 cm × 1.5 m. Find the cost of painting its entire outer surface at the rate of ₹ 22 per m2.


Opposite faces of a cuboid are ______ in area.


A cuboidal tin box opened at the top has dimensions 20 cm × 16 cm × 14 cm. What is the total area of metal sheet required to make 10 such boxes?


Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant figure.


Below are the drawings of cross sections of two different pipes used to fill swimming pools. Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a radius of 15 cm. If the force of the flow of water coming out of the pipes is the same in both the cases, which will fill the swimming pool faster?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×