Answer:
Area of ΔQRS is 140 unit².
Step-by-step explanation:
Given: Coordinates of ΔQRS, Q( -9 , 5 ) , R( 6 , 10 ) & S( 2 , -10 )
To find: Area of triangle ΔQRS
Area of triangle is given by following formula,
= 140 unit²
Therefore, Area of ΔQRS is 140 unit².