Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
Given length =12,m Breadth = 9m and Height = 4m.
Total surface area of tank`=2(lb+bh+hl)`
`=2[12xx9+9xx4+12xx4]`
`=2[108+36+48]`
`=384m^2`
`"Now length of iron sheet"=(384)/("width of iron sheet" )`
`=384/2=194m.`
Cost of iron sheet = length of sheet xx cost rate
`=192xx5=Rs.960`
APPEARS IN
संबंधित प्रश्न
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.
Find the height of a cuboid whose base area is 180 cm2 and volume is 900 cm3?
The paint in a certain container is sufficient to paint on area equal to 9.375 m2. How manybricks of dimension 22.5 cm × 10 cm × 7.5 cm can be painted out of this container?
Find the surface area of a cuboid whoselength = 3.2 m, breadth = 30 dm, height = 250 cm.
Show that the product of the areas of the floor and two adjacent walls of a cuboid is the square of its volume.
The total surface area of a cube is 216 cm2. Find its volume.
Four cubes, each of edge 9 cm, are joined as shown below :
Write the dimensions of the resulting cuboid obtained. Also, find the total surface area and the volume
Find the area of metal-sheet required to make an open tank of length = 10 m, breadth = 7.5 m and depth = 3.8 m.
A room is 22m long, 15m broad and 6m high. Find the area of its four walls and the cost of painting including doors and windows at the rate of Rs.12per m2.
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?
