It is a cylinder which looks like a tin can.
There are zero diagonals in a circle because a circle has no sides no vertices or it doesn't have a flat surface so zero.
It does not have a flat surface.
The surface area is the area of every face of a 3D object, such as a cube or sphere. Area usually refers to a flat object, such as a circle or rectangle.
circle
A flat round object is a circle. Surface area of a circle = pi*radius squared.
No because it does not have a flat or level surface.
semi-circle
is a face.for example,get a wooden shape.make sure that it is not a sphere[circle].get a square.run your finger across the front.that is a flat surface.
Circle
half circle
The surface area of a semicircle has the round surface which is half a sphere and also has the flat surface which is a circle.
It is a cylinder which looks like a tin can.
A cone.
There are zero diagonals in a circle because a circle has no sides no vertices or it doesn't have a flat surface so zero.
The possible could only be a CONE
Square, triangle, circle, oval. Anything that can be drawn on a flat (planar) surface.