Question

if the area of triangle with vertices (0,0),(1,0),(0,a) is 10 units , find the value of a

Answer 1

a=20

Step-by-step explanation:

10=1/2 (0(0-a)+1 (a-0)+0 (0-0)

10=1/2 (0+a+0)

10=1/2 (a)

10×2=a

a=20