Question

find area of triangle of side 12 cm, 17cm, 25 cm

Answer 1

by herons formula :-

area=
$\sqrt{27 \times (27 - 12) \times (27 - 17) \times (27 - 25) }$
$\sqrt{27 \times 15 \times 10 \times 2 }$
$30 \sqrt{7}$