Advertisements
Advertisements
प्रश्न
Find the surface area of a cube whose volume is 343 m3.
उत्तर
\[\text { Volume of the given cube = 343 }m^3 \]
\[\text { We know that volume of a cube = (side })^3 \]
\[ \Rightarrow\text { (side })^3 = 343 \]
\[ \text { i . e . , side }= \sqrt[3]{343} = 7 m\]
\[ \therefore \text { Surface area of the cube = 6 }\times \text { (side ) }^2 = 6 \times (7 )^2 = 294 m^2 \]
APPEARS IN
संबंधित प्रश्न
Find the volume in cubic decimetre of the cube whose side is 75 cm.
Find the volume in cubic decimetre of the cube whose side is 2 dm 5 cm .
Fill in the blank in the following so as to make the statement true:
The volume of a cube of side 8 cm is ........
Fill in the blank in the following so as to make the statement true:
1 cu. km = ........ cu. m
Find the surface area of a cube whose edge is 3 cm.
Find the length of 13.2 kg of copper wire of diameter 4 mm, when 1 cubic cm of copper weighs 8.4 gm.
The edges of three cubes of metal are 3 cm, 4 cm, and 5 cm. They are melted and formed into a single cube. Find the edge of the new cube.
The internal length, breadth, and height of a box are 30 cm, 24 cm, and 15 cm. Find the largest number of cubes which can be placed inside this box if the edge of each cube is
(i) 3 cm (ii) 4 cm (iii) 5 cm
When the length of each side of a cube is increased by 3 cm, its volume is increased by 2457 cm3. Find its side. How much will its volume decrease, if the length of each side of it is reduced by 20%?
A solid cube of side 12 cm is cut into 8 identical cubes. What will be the side of the new cube? Also, find the ratio between the surface area of the original cube and the total surface area of all the small cubes formed.
