Answer:
The area of the triangle is 10.92 cm².
Step-by-step explanation:
The formula for the area of a triangle is

where b is the length of the base and h is the height. We know that b = 2.8 and h = 7.8, so you would substitute into the formula:
cm²
Answer:
try restarting it or re downloading
About 1.83. You would set up the equation like this
D(-1,-1), E(-8,-4), F(-8,-8)