Question

the sides of a triangle field are 165m. 154m and 143m. find area of the field

Answer 1

: s = 2 a + b + c = ( ) m 231m 2 165 154 143 = + + Mathematics Secondary Course 463 Notes Perimeters and Areas of Plane Figures MODULE - 4 Mensuration So, area of the field = s( )( )( ) s −a s −b s −c = 231×( )( )( ) 231−165 231−154 231−143 m2 = 231×66×77×88 m2 = 11×3×7×11× 2×3×11×7×11× 2× 2× 2 m2 = 11 × 11 × 3 × 7 × 2 × 2 m2 = 10164 m2