MATHEMATICS · Single correct · CBSE · Mathematics · Heron's Formula · Heron's Formula
Problem
The semi-perimeter of a triangle is 28 cm. Two of its sides measure 7 cm and 25 cm and its area is 84 cm2. Calculate the length of the third side.
(a) 26 cm
(b) 24 cm
(c) 22 cm
(d) 28 cm