Advertisements
Advertisements
प्रश्न
The volume of a cube is 1331 cm3. Find its total surface area.
Advertisements
उत्तर
Let the side of the cube be 'a' cm
∴ Volume of cube = a3
∴ 1331 = a3 ...(Given)
∴ a = `root(3)(1331)` ...(Taking cube roots on both sides)
∴ a = 11cm
Surface area of a cube
= 6a2
= 6 x 112
= 6 x 121
= 726cm2
Hence, the surface area of the cube is 726cm2.
APPEARS IN
संबंधित प्रश्न
Suppose that there are two cubes, having edges 2 cm and 4 cm, respectively. Find the volumes V1and V2 of the cubes and compare them.
Find the volume in cubic decimetre of the cube whose side is 2 dm 5 cm .
The dimensions of a metal block are 2.25 m by 1.5 m by 27 cm. It is melted and recast into cubes, each of the side 45 cm. How many cubes are formed?
Fill in the blank in the following so as to make the statement true:
1 cu.dm = ........ cu. mm
Fill in the blank in the following so as to make the statement true:
1 litre = ........ cu. cm
Find the surface area of a cube whose edge is 1.2 m.
A metal cube of edge 12 cm is melted and formed into three smaller cubes. If the edges of the two smaller cubes are 6 cm and 8 cm, find the edge of the third smaller cube.
The length of a hall is double its breadth. Its height is 3 m. The area of its four walls (including doors and windows) is 108 m2, find its volume.
How many bricks will be required for constructing a wall which is 16 m long, 3 m high, and 22.5 cm thick, if each brick measures 25 cm x 11.25 cm x 6 cm?
The volume of a cube is 64 cm3. Its surface area is ______.
