Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Length of each side of cube, l = 3 cm
∴ Total surface area of the cube = 6 × l2
= 6 × (3)2
= 6 × 9
= 54 cm2
संबंधित प्रश्न
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.
Find the volume of a cuboid whose length =1.2 m, breadth = 30 cm, height = 15 cm.
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 surface area of a cuboid is 1300 cm2. If its breadth is 10 cm and height is 20 cm2, find its length.
The sum of the length, breadth and depth of a cuboid is 19 cm and its diagonal is ` 5 sqrt(5)` cm. Its surface area is
If V is the volume of a cuboid of dimensions x, y, z and A is its surface area, then `A/V`
The dining-hall of a hotel is 75 m long; 60 m broad and 16 m high. It has five – doors 4 m by 3 m each and four windows 3 m by 1.6 m each. Find the cost of :
(i) papering its walls at the rate of Rs.12 per m2;
(ii) carpetting its floor at the rate of Rs.25 per m2.
If radii of two cylinders are in the ratio 4 : 3 and their heights are in the ratio 5: 6, find the ratio of their curved surfaces.
Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant figure.
