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Surface area of a sphere = 4*pi*radius2 Surface area = 4*pi*42 => 201.0619298 Surface area of the sphere = 201 square units correct to three significant figures.
The surface area of the 'sphere' is four times the area of a 'great circle',or (4 pi) times the RADIUS squared.
You are correct my friend! Surface Area of a Sphere is indeed = 4(pi)r^2 and that is also equal to Circumference times Diameter!
Do you mean volume or surface area? volume = 4/3 x pi x r^3 (four divided by three, multiplied by pi, multiplied by radius cubed). surface area = 4 x pi x r^2 (four multiplied by pi, multiplied by radius squared).
Four...
Surface area of a sphere = 4*pi*radius2 Surface area = 4*pi*42 => 201.0619298 Surface area of the sphere = 201 square units correct to three significant figures.
The surface area of a sphere is 4*pi*r^2, that is four times pi times the square of the radius. Answers to questions like this can be found on Wikipedia.
The surface area of the 'sphere' is four times the area of a 'great circle',or (4 pi) times the RADIUS squared.
You are correct my friend! Surface Area of a Sphere is indeed = 4(pi)r^2 and that is also equal to Circumference times Diameter!
A sphere is a shape where the distance from the center to the edge is the same in all directions. This distance is called the radius ( r ). The formula for determining surface volume is Surface area = 4_r2 Volume = 4/3_r3.
Do you mean volume or surface area? volume = 4/3 x pi x r^3 (four divided by three, multiplied by pi, multiplied by radius cubed). surface area = 4 x pi x r^2 (four multiplied by pi, multiplied by radius squared).
When a cell doubles in diameter, the cell membrane surface area is multiplied by four. This is because the surface area of a sphere (or a cell in this case) is proportional to the square of its radius.
A sphere with a radius of 4 units has a volume of 268.08 cubic units.
A four-inch radius circle has an area of about 50.27 square inches.
volume is equal to four thirds pie times the radius cubed.
Four thirds of pi x the cube of the radius