Advertisements
Advertisements
Question
Find the ratio of the total surface area and lateral surface area of a cube.
Solution
Cube total surface area `6a^2`
Where, a = edge of cube
And, lateral surface area`= LSA =4a^2`
Where a =edge of cube
`∴Ratio of TSA and LSA =(6a^2)/(4a^2)is 3/2 is 3:2`
APPEARS IN
RELATED QUESTIONS
Find the height of a cuboid whose base area is 180 cm2 and volume is 900 cm3?
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.
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?
A tank is 8 m long, 6 m broad and 2 m high. How much water can it contain?
Find the volume and total surface area of a cube whose each edge is:
(i) 8 cm
(ii) 2 m 40 cm.
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.
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).
The ratio between the curved surface area and the total surface area of a cylinder is 1: 2. Find the ratio between the height and the radius of the cylinder.
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.