हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

The Capacity of a Rectangular Tank is 5.2 M3 and the Area of Its Base is 2.6 X 104 Cm2; Find Its Height (Depth). - Mathematics

Advertisements
Advertisements

प्रश्न

The capacity of a rectangular tank is 5.2 m3 and the area of its base is 2.6 x 104 cm2; find its height (depth).

योग
Advertisements

उत्तर

Capacity of a tank = 5.2 m3

and area of its base = 2.6 x 104 cm2

= `(2.6 xx 10000)/(100 xx 100) = 2.6`m2

⇒ lb = 2.6 m2

and lbh = 5.2 m3

∴ Height (h) = `5.2/2.6 = 2 "m"`

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 21: Surface Area, Volume and Capacity - Exercise 21 (C) [पृष्ठ २४१]

APPEARS IN

सेलिना Concise Mathematics [English] Class 8 ICSE
अध्याय 21 Surface Area, Volume and Capacity
Exercise 21 (C) | Q 5 | पृष्ठ २४१

संबंधित प्रश्न

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?


Find the height of a cuboid whose base area is 180 cm2 and volume is 900 cm3?


Water is pouring into a cubiodal reservoir at the rate of 60 litres per minute. If the volume of the reservoir is 108 m3, find the number of hours it will take to fill the reservoir.


Find the lateral surface area and total surface area of a cuboid of length 80 cm, breadth 40 cm and height 20 cm.


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 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.


A closed iron tank 12 m long, 9 m wide and 4 m deep is to be made. Determine the cost of iron sheet used at the rate of Rs. 5 per metre sheet, sheet being 2 m wide.


How many wooden cubical blocks of side 25 cm can be cut from a log of wood of size 3 m by 75 cm by 50 cm, assuming that there is no wastage?


What will be the height of a cuboid of volume 168 m3, if the area of its base is 28 m2?


How many bricks each of size 25 cm × 10 cm × 8 cm will be required to build a wall 5 m long, 3 m high and 16 cm thick, assuming that the volume of sand and cement used in the construction is negligible?


The breadth of a room is twice its height, one half of its length and the volume of the room is 512 cu. dm. Find its dimensions.


The cost of preparing the walls of a room 12 m long at the rate of Rs 1.35 per square metre is Rs 340.20 and the cost of matting the floor at 85 paise per square metre is Rs 91.80. Find the height of the room.


Find the edge of a cube whose surface area is 432 m2.

 

Three cubes of each side 4 cm are joined end to end. Find the surface area of the resulting cuboid.


The length, breadth and height of a rectangular solid are in the ratio 5 : 4 : 2. If the total surface area is 1216 cm2, find the length, the breadth and the height of the solid.


The breadth and height of a rectangular solid are 1.20 m and 80 cm respectively. If the volume of the cuboid is 1.92 m3; find its length.


The length, breadth, and height of a cuboid are in the ratio 6: 5 : 3. If its total surface area is 504 cm2; find its dimensions. Also, find the volume of the cuboid.


How many persons can be accommodated in a big-hall of dimensions 40 m, 25 m, and 15 m; assuming that each person requires 5 m3 of air?


The internal length, breadth, and height of a closed box are 1 m, 80 cm, and 25 cm. respectively. If its sides are made of 2.5 cm thick wood; find :
(i) the capacity of the box
(ii) the volume of wood used to make the box.


A cuboid is 8 m long, 12 m broad and 3.5 high, Find its
(i) total surface area
(ii) lateral surface area


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.


If the edge of a cube is 8 cm long, find its total surface area.


Find the volume of wood used in making a closed box 22 cm by 18 cm by 14 cm, using a 1 cm thick wood. Also, find the cost of wood required to make the box at the rate of Rs. 5 per cm³ How many cubes of side 2 cm can be placed in the box?


An aquarium is in the form of a cuboid whose external measures are 80 cm × 30 cm × 40 cm. The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed?

Three identical cubes of side 4 cm are joined end to end. Find the total surface area and lateral surface area of the new resulting cuboid


The areas of any two faces of a cuboid are equal.


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?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×