   Chapter 8.CR, Problem 16CR Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Solutions

Chapter
Section Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

Find the area of an equilateral triangle if each of its sides has length 12 cm.

To determine

To find:

The area of an equilateral triangle.

Explanation

Formula:

The area of an equilateral triangle (all sides congruent) can be found using the formula,

A=34a2

Where a is the length of one side of the triangle.

Calculation:

Each side of equilateral triangle has length 12 cm.

Sketch the equilateral triangle as follows:

The area of the equilateral triangle, A=34a2.

a=12cm

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