The exact area of triangle ABC is 93.51 cm².
The given parameters;
- <em>Height of the triangle, h = 18 cm</em>
The base of the triangle is calculated by using trigonometry ratio as follows;
where;
- <em>b </em><em>is the </em><em>base </em><em>of the </em><em>triangle ABC</em>
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The area of the triangle ABC with the calculated base and given height is calculated as follows;
Thus, the exact area of triangle ABC is 93.51 cm².
Learn more about area of a triangle here: brainly.com/question/23945265