helpp me pleasee?

Question

4. Three-dimensional figures made of polygons are called polyhedrons.
A. true
B. false

5. A solid with circular bases and a lateral curved surface that is a rectangle when flattened out is a cone.
A. true
B false

14. A segment from the vertex of a pyramid to a side of the base is called a slant height.
A. true
B. false

15. A prism with 6 square faces is called a hexahedron.
A. true
B. false

how do i find the volume,surface area,

Answer 1

4. True, although I prefer "polyhedra" as the plural of "polyhedron."

5. False. This describes a cylinder.

14. False, because the description is insufficient. A slant height must go from the vertex to the midpoint of a side of the base.

15. True. In fact, this definition is overly restrictive, because any rectangular prism or parallelepiped is a hexahedron, and so is a pentagonal pyramid. A cube can also be called a regular hexahedron.

Answer 2

These are all answered in your book.

Part of learning and college is knowing where and how to find the answer.