Assuming these are the areas of three of its faces, the dimensions are 15 cm, 30 cm and 20 cm.
If it is a cuboid, its volume is 36 cubic units.
It depends on which type of cuboid we are talking about. If it is a CUBE (a special type of cuboid), then it has nine planes of symmetry. If it is a cuboid with length, width and height all different, then it has three planes of symmetry. If it is a cuboid with two equal measurements (say width and length), then it has five planes of symmetry.
You cannot, because you have no information on the shape: is it a 2-d triangle or a 3-d cuboid?
If the shape is a cuboid then 7*5*2 = 70 cubic cm
Information about the volume of an object provides no information on its shape: it could be a sphere, ellipsoid, cube, cuboid or even a blob. Even if, on some tenuous basis, you assume that it is cuboid, it could be tall and thin or short and squat.
Yes, cuboid has vertices(or corners). A cuboid has eight vertices.
A cuboid is 100% of a cuboid and 0% of any other shape.
diagram of cuboid
a net cuboid is a net of cuboid. that means a form of making cuboard.
Yes, a cuboid is a prism.
This is a net of a cuboid
a box is good for cuboid