Example 6:
A cube has a surface area of 150. What is the volume of the cube?
Solution
:
The surface area of the cube is:
SA
= 6a
2
Thus:
a
2
= SA/6 = 150/6 = 25
and
a = 5 cm
The volume of the cube is:
V
= a
3
V = 5
3
V = 125 cm
3
The easiest way to find the volume of a cube is to find the length of its edgeand then cube that number.Here's how to find the length of the edge from the total surface area:-- A cube has 6 faces. If its total surface area is 96 square units, thenthe area of each face is 16 square units.-- Each face is a square. If the area of the square is 16 square units, thenthe side of the square is 4 units.But the side of the square face is the same as the edge of the cube !-- The volume of the cube is (4 x 4 x 4) = 64 cubic units.
A sphere with this volume has a diameter of 9.1416 cm, a surface area of 262.54 square cm and a circumference of 28.719 cm.
Providing that the log is greater than 32 times sq rt 2 which is the length of the cube. Volume: (32*sq rt 32)^3 = 92682 cubic cm rounded Total surface are: 6*(32*sq rt 32)*(32*sq rt 32) = 12288 square cm
Cube root of 216 = 6 units Therefore each face is 6*6 units which = 36 square units A cube has 6 faces, so 6*36 = 216 square units which is the surface area of the cube.
surface area = 4πr² → r = √(A/4π) = √(36π m²/4π) = √(9 m²) = 3 m volume = (4/3)πr³ = (4/3)π(3 m)³ = (4/3)π27 m³ = 36π m³
The surface area of a cube whose volume is 64 cubic units is: 96 square units.
The cube's volume is 1728cm3
1728cm3
V = 27 units3
V = 64 cubic inches.
The easiest way to find the volume of a cube is to find the length of its edgeand then cube that number.Here's how to find the length of the edge from the total surface area:-- A cube has 6 faces. If its total surface area is 96 square units, thenthe area of each face is 16 square units.-- Each face is a square. If the area of the square is 16 square units, thenthe side of the square is 4 units.But the side of the square face is the same as the edge of the cube !-- The volume of the cube is (4 x 4 x 4) = 64 cubic units.
The total surface area is 150.79632 square units
The total surface area is 230.64 square units.
The same island whose surface area in scientific notation is 2.130308*108 square meters
Approximately 50.265 square inches.
A sphere with this volume has a diameter of 9.1416 cm, a surface area of 262.54 square cm and a circumference of 28.719 cm.
Each edge works out as 24 cm and so 24*24*24 = 13824 cubic cm If it is a cube, it has 6 identical square faces, the area of which are 3456/6=576. The edges of these squares are square root 576, as each side is the same. Square root 576=24. Then one can use the basic formula for volume of length*width*height. 24*24*24=13824 cubic cm.