Please help me! I will mark Brainliest if you answer all of these portfolio questions! +100 POINTS!

I filled out the PDF to make it easy hope this helps

Step-by-step explanation:

let me know if you need help understanding how I did things.

282 6/7 cm^2

step-by-step explanation:

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.