Mathematics

Problem

Find the area (to one decimal place) of a triangle whose side lengths are

7\,\text{cm}

8\,\text{cm}

, and

9\,\text{cm}

. a)

30.0\,\text{cm}^2

28.0\,\text{cm}^2

26.8\,\text{cm}^2

36.0\,\text{cm}^2