Answer:
C) 10.92
Step-by-step explanation:
A= 1/2bh
A = 1/2(2.8)(7.8)
A= 1/2(21.84)
A = 10.92
C. 10.92^2
Area of triangles can be solved using: 1/2*b*h
1/2*2.8*7.8=10.92
