Question

if (22,5) is the centroid of a triangle with verticles|(1,4),(2,9) and (3,2) then value of a is
a) 1
b) 2.
c) 3
DO​

Answer 1

Answer:

Correct option is

C

4, -2

Centroid of a triangle with vertices

(x

1

,y

1

);(x

2

,y

2

) and (x

3

,y

3

) is calculated by the formula (

3

x

1

+x

2

+x

3

,

3

y

1

+y

2

+y

3

)

So,

centroid =(

3

4+3+5

,

3

−6−2+2

) =(4,−2)