Advertisements
Advertisements
Question
Hameed has built a cubical water tank with lid for his house, with each other edge 1 .5 m long. He gets the outer surface of the tank excluding the base, covered with square tiles of side 25 cm. Find how much he would spend for the tiles, if the cost of tiles is Rs. 360 per dozen.
Advertisements
Solution
Given that
Hameed is giving 5 outer faces of the tank covered with tiles he would need to know the
surface area of the tank, to decide on the number of tiles required.
Edge of the cubic tank = `1.5m=150cm=a`
Area of each square tile = `("surface area of tank")/("area of each title")`
`=(5xx150xx150)/(25xx25)=180`
`("Cost of 1 dozen tiles i.e., cost of 12 tiles = Rs. 360")`
`("Therefore, cost of 12 balls tiles = Rs. 360")`
`∴"cost of one title" = (360)/(12)=rs.30`
`∴ The cost of 180 title= 180xxRs.30`
`=Rs.5.400`
APPEARS IN
RELATED QUESTIONS
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?
What will happen to the volume of a cuboid if its Length is doubled, height is same and breadth is halved?
Find the volume in cubic metre (cu. m) of the cuboid whose dimensions is length = 10 m, breadth = 25 dm, height = 50 cm.
Three cubes of each side 4 cm are joined end to end. Find the surface area of the resulting cuboid.
The length of the longest rod that can be fitted in a cubical vessel of edge 10 cm long, is
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.
A solid cube of edge 14 cm is melted down and recast into smaller and equal cubes each of the edge 2 cm; find the number of smaller cubes obtained.
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.
375 persons can be accommodated in a room whose dimensions are in the ratio of 6 : 4 : 1. Calculate the area of the four walls of the room if the each person consumes 64m3 of air.
