A triangle has side lengths

MATHEMATICS · Single correct · CBSE · Mathematics · Heron's Formula · Heron's Formula

Problem

7\,\text{cm}

8\,\text{cm}

and

9\,\text{cm}

. What is its area correct to one decimal place? (a)

28.0\,\text{cm}^2

(b)

19.0\,\text{cm}^2

(c)

26.8\,\text{cm}^2

(d)

30.0\,\text{cm}^2