sides of a triangle are 13 cm . 14 cm . and 15 cm . respectively . calculate the area of triangle .
let a = 13 cm , b = 14 cm . and c = 15 cm . s = 1 / 2 ( 13 + 14 + 15 ) = 21 , ( s - a ) = 8 , ( s - b ) = 7 and ( s - c ) = 6 area = √ 21 * 8 * 7 * 6 = 84 sq . cm answer c
triangle_area_three_edges(13, 14, 15)