Advertisements
Advertisements
प्रश्न
Each face of a cube has a perimeter equal to 32 cm. Find its surface area and its volume.
उत्तर
The perimeter of a cube formula is, Perimeter = 4a where ( a = length )
Given that perimeter of the face of the cube is 32 cm
⇒ 4a = 32 cm
⇒ a = `( 32 )/( 4 )`
⇒ a = 8 cm
We know that surface area of a cube with side 'a' = 6a2
Thus, Surface area = 6 × 82 = 6 × 64 = 384 cm2
We know that the volume of a cube with side 'a' = a3
Thus, volume = 83 = 512 cm3
APPEARS IN
संबंधित प्रश्न
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 1.2 m.
Total surface area of a cube is 5400 sq. cm. Find the surface area of all vertical faces of the cube.
The volume of a cube is 729 cm3. Find its total surface area.
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
The total surface area of a cube is 864 cm2. Find its volume.
The total surface area of a cube is 294cm2. Find its volume.
Find the T.S.A and L.S.A of the cube whose side is 8 m
A river 2 m deep and 45 m wide is flowing at the rate of 3 km per hour. Find the amount of water in cubic metres that runs into the sea per minute.
