Advertisements
Advertisements
प्रश्न
If the total surface area of a cube is 2400 cm2 then, find its lateral surface area
Advertisements
उत्तर
T.S.A of the cube = 2400 cm2
6a2 = 2400
a2 = `2400/6`
= 400 cm2
L.S.A of the cube = 4a2 sq.units
= 4 × 400 cm2
= 1600 cm2
OR
T.S.A of the cube = 2400 cm2
6a2 = 2400
a2 = `2400/6`
= 400
a = `sqrt(400)`
= 20 cm
Side of a cube (a) = 20 cm
L.S.A of the cube = 4a2 sq.units
= 4 × 20 × 20 cm2
= 1600 cm2
APPEARS IN
संबंधित प्रश्न
If each edge of a cube is doubled, how many times will its surface area increase?
Find the volume of a cube whose side is 8 cm .
A cube A has side thrice as long as that of cube B. What is the ratio of the volume of cube A to that of cube B?
Three cubes, whose edges are x cm, 8 cm, and 10 cm respectively, are melted and recast into a single cube of edge 12 cm. Find 'x'.
A square plate of side 'x' cm is 8 mm thick. If its volume is 2880 cm3; find the value of x.
The edges of three solid cubes are 6 cm, 8 cm, and 10 cm. These cubes are melted and recast into a single cube. Find the edge of the resulting cube.
The square on the diagonal of a cube has an area of 441 cm2. Find the length of the side and total surface area of the cube.
If the ratio of the sides of two cubes are 2 : 3, then ratio of their surface areas will be
The lateral surface area of a cube is 256 m2. The volume of the cube is ______.
A cube of side 5 cm is painted on all its faces. If it is sliced into 1 cubic centimetre cubes, how many 1 cubic centimetre cubes will have exactly one of their faces painted?
