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What do you call the shape that's half circle?
Semi-circle. (2D) Hemi-sphere (3D)
What do you call the surface of a sphere?
The n-sphere is denoted Sn. It is an example of a compact topological manifold without boundary.
How do you use pi to find a circle's dimensions?
Pi is defined as the ratio of the circumference of a circle to the diameter of the circle.Therefore, if you measure the diameter of the circle (call it 'D') then the circumference of the circle is pi times D.To find the area of the circle use the formula Area = pi* D2 /4 .Going one step further, to a sphere, if you measure the radius of the sphere (call it R, where R is half the diameter D), then:1) The surface area of the sphere is Area = 4 * pi * R2 .2) The volume of the sphere is Volume = (4/3) * pi * R3 .
Formula for half a sphere for volume?
Find the volume for the whole sphere (4/3 x pi x radius cubed) then divide by two.
What shape has one circular face and one face which is half the surface of a sphere?
A hemisphere
