How to get the perimeter of a trapezoid?

Understand the Problem

The question is asking for the method to calculate the perimeter of a trapezoid, which involves summing the lengths of all its sides.

Answer

The perimeter of a trapezoid is calculated by adding the lengths of all its sides.
Answer for screen readers

The perimeter of a trapezoid is calculated by adding the lengths of all its sides.

Steps to Solve

  1. Identify the lengths of all four sides of the trapezoid

Ensure you have the lengths of the two parallel sides (bases) and the two non-parallel sides (legs).

Let the lengths of the sides be denoted as $a$, $b$, $c$, and $d$, where $a$ and $c$ are the lengths of the parallel sides and $b$ and $d$ are the legs.

  1. Use the perimeter formula for a trapezoid

The perimeter $P$ of a trapezoid is the sum of all its sides.

$$P = a + b + c + d$$

  1. Add the lengths together

Sum the values of $a$, $b$, $c$, and $d$ to find the perimeter.

For example, if $a = 5$ units, $b = 3$ units, $c = 7$ units, and $d = 4$ units:

$$P = 5 + 3 + 7 + 4 = 19 \text{ units}$$

The perimeter of a trapezoid is calculated by adding the lengths of all its sides.

More Information

The word 'trapezoid' comes from the Greek word 'trapeza', which means 'table', reflecting the shape's resemblance to a four-legged table.

Tips

A common mistake is to forget that all four sides must be added together. Make sure to double-check the lengths you have and that you include them all in your final sum.

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