What is the area of this triangle in the coordinate plan?

a) 25.0 units²

b) 27.5 units²

c) 50.0 units²

d) 55.0 units²

B

Step-by-step explanation:

The area of a triangle is 1/2b*h. The base of the triangle is 11 and the height is 5. This means the area of 5*11/2 = 55/2 = 27.5.

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5