Treat the 3D sphere as a 2D circle. The radius for the sphere is the same radius as for the circle. No matter where on the sphere you place a mark, the distance (radius) from the mark to the centre of the sphere will always be the same as the circle.
The Earth is close enough to a sphere, so you can use the formula for a sphere: 4 x pi x r2. "r" is the radius; if you find the diameter of Earth somewhere, divide it by 2 to get the radius.The Earth is close enough to a sphere, so you can use the formula for a sphere: 4 x pi x r2. "r" is the radius; if you find the diameter of Earth somewhere, divide it by 2 to get the radius.The Earth is close enough to a sphere, so you can use the formula for a sphere: 4 x pi x r2. "r" is the radius; if you find the diameter of Earth somewhere, divide it by 2 to get the radius.The Earth is close enough to a sphere, so you can use the formula for a sphere: 4 x pi x r2. "r" is the radius; if you find the diameter of Earth somewhere, divide it by 2 to get the radius.
Surface area of a sphere = 4 x (pi) x (radius)2
Four thirds of pi x the cube of the radius
The formula for the volume of any sphere isVolume = ( 4/3 pi ) x (cube of the radius)
you measuresit by the radius
Use the formula for volume to solve for the radius of the sphere and then plug that radius into the formula for the surface area of a sphere.
The formula for the volume of a sphere is based on the radius of the sphere. It is equal to 4/3 multiplied by pi, multiplied by the radius cubed.
Treat the 3D sphere as a 2D circle. The radius for the sphere is the same radius as for the circle. No matter where on the sphere you place a mark, the distance (radius) from the mark to the centre of the sphere will always be the same as the circle.
The Earth is close enough to a sphere, so you can use the formula for a sphere: 4 x pi x r2. "r" is the radius; if you find the diameter of Earth somewhere, divide it by 2 to get the radius.The Earth is close enough to a sphere, so you can use the formula for a sphere: 4 x pi x r2. "r" is the radius; if you find the diameter of Earth somewhere, divide it by 2 to get the radius.The Earth is close enough to a sphere, so you can use the formula for a sphere: 4 x pi x r2. "r" is the radius; if you find the diameter of Earth somewhere, divide it by 2 to get the radius.The Earth is close enough to a sphere, so you can use the formula for a sphere: 4 x pi x r2. "r" is the radius; if you find the diameter of Earth somewhere, divide it by 2 to get the radius.
The formula with a known radius is: V = 4/3(PI*r3) A sphere with a radius of 4 units has a volume of 268.08 cubic units.
Surface area of a sphere = 4 x (pi) x (radius)2
Four thirds of pi x the cube of the radius
Use this formula when the radius is known: V = 4/3(PI*r3)
The formula to find the volume of a sphere us V = 4/3πr3, where V is volume, π is pi, which can be rounded to 3.14, and r is the radius. In order to find the volume of your sphere, the radius has to have a length unit, such as 10.2 cm or 10.2 inches.
The formula for the volume of any sphere isVolume = ( 4/3 pi ) x (cube of the radius)
Mars is almost a sphere and the volume of a sphere is: 4/3*pi*radius3 So find its radius and its volume can be found using the above formula