Whats the area of the above figure which has sides of length 6 and 8

Can someone me and do the problem plz so i can understand it more better

How many solutions does the nonlinear system of equations graphed below have?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.