Question

The total length of the closed figure is called _____.
a.perimeter
b.area
c.sum
d.total

Answer 1

Hint: Draw quadrilateral and polygons to find the length. Adding the sides will be given you the term that we require.

Complete step-by-step answer:

The total length of a closed figure is called perimeter.
We can explain perimeter with an example of a figure. The perimeter of a simple closed figure is the sum of the measures of line – segments which surrounds the figure.
Consider the figure given below:

The perimeter of the given triangle ABC = sum of its sides = AB + BC + AC.
The perimeter of the quadrilateral MNOP = MN + ON + OP + PM.
The perimeter of the octagon = AB + BC + CD + DE + EF + FG + GH + AH.
Similarly, the perimeter of a circle is the measure of circumference = \[2\pi r\].
Hence from all these examples, we can say that the total length of the boundary of a close d figure is the perimeter.
\[\therefore \] Option (a) is the correct answer.

Note: We can write an example of finding the perimeter of a quadrilateral.
Thus the perimeter of quadrilateral PQRS,

= PQ + QR + RS + PS
= 5 + 4 + 7 + 3
= 19cm.