What is the area of this parallelogram?

It would have to be 88.  

B x h

7+4= 11

11x 8 = 88

if you consider them separate shapes.. and move the triangle to the right over to the left side thats what your actually figuring out.. its how i showed my daughter to do it.

overpriced

step-by-step explanation:

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.