31 km , 9km find the area of the triagle

Hope I helped! Brainlest!

Step-by-step explanation:

1/2 x 31 x 9 = 139.5 km

139.5

Step-by-step explanation:

Area of triagle = 0.5 * Al-Qaeda * height

Area= 0.5 * 31*9

Area =139.5 km^2

option 1

data plot with   3 dots over 33, 1 dot over 34, 2 dots over 35, no dot over 36, 1 dot over 37, 2 dots over 38, 4 dots over 39, and 2 dot over 40.