Question

A plane surface of a solid object is called its

Answer 1

Answer:

Flat surfaces are called plane surfaces. The objects having plane surfaces are called plane objects. The surfaces of book, match box, almirah, table, etc., are the examples of plane surfaces. (ii) Curved surface: The surfaces which are not flat, are called curved surface.

Answer 2

A plane surface of a solid object is called the surface area.

• The outer surface of any solid figure is called its surface area. It can be calculated by adding the area of all the faces or surfaces of the object.
• The surface area can be total or lateral.
• Some objects which have a cylindrical, conical, or spherical shape have a lateral or curved surface area.
• Only 3-D objects can have a plane surface.