Question

what is perimeter, area and volume

Answer 1

Theperimeter is also known as circumference.The Perimeter of polygon is the distance around outside.
The area of a simple, closed, planer curve
is the amount of space inside.
The volume of a 3d shape is the amount of space displaced by it.

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Answer 2

Perimeter-The Perimeter of a closed plane figure is the length of its boundary i.e. the sum of length of all sides.
Area-The area of a closed plane figure is the measurement of the region (surface)enclosed by its boundary (Sides).
Volume-The measurement of the space enclosed by a solid is called its volume.