Find the area of a triangle whose side lengths are

MATHEMATICS · Single correct · GCSE · Mathematics · Geometry and Measures · Geometry and Measures

Problem

13\,\text{cm}

14\,\text{cm}

and

15\,\text{cm}

. (a)

90\,\text{cm}^2

(b)

84\,\text{cm}^2

(c)

77\,\text{cm}^2

(d)

42\,\text{cm}^2