Advertisements
Advertisements
प्रश्न
Find the lateral surface area and total surface area of a cuboid of length 80 cm, breadth 40 cm and height 20 cm.
Advertisements
उत्तर
It is given that
Cuboid length= 80cm= L
Breath = 40cm=b
Height=20cm=h
WKT,
Total surface area = `2[lb+bh+hl]`
`=2[(80)(40)+40(20)+20(80)]`
`=2[3200+800+1600]`
`=2[5600]`
`=11,200cm^2`
`"Lateral surface area" = 2[l+b]h=2[80+40]20`
`=40(120)`
`=4800cm^2`
APPEARS IN
संबंधित प्रश्न
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.
What will happen to the volume of a cuboid if its Length is doubled, height is same and breadth is halved?
Three cuboids of dimensions 5 cm × 6 cm × 7cm, 4cm × 7cm × 8 cm and 2 cm × 3 cm × 13 cm are melted and a cube is made. Find the side of cube.
The central hall of a school is 80 m long and 8 m high. It has 10 doors each of size 3 m × 1.5 m and 10 windows each of size 1.5 m × 1 m. If the cost of white-washing the walls of the hall at the rate of Rs 1.20 per m2 is Rs 2385.60, fidn the breadth of the hall.
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 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?
Find the capacity of a cylindrical container with an internal diameter of 28 cm and a height of 20 cm.
The diameter of a garden roller is 1.4 m and it 2 m long. Find the maximum area covered by its 50 revolutions?
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.
A rectangular sheet of dimensions 25 cm × 7 cm is rotated about its longer side. Find the volume and the whole surface area of the solid thus generated.
