Please help will give the crown thing

1. inconsistent solution

2.elimination method

3.system of linear equations

Step-by-step explanation:

that is the answer

Step-by-step explanation:

Using the Pythagorean Theorem we split the base in 2 which gives us 5 and we start the process 5^2+x^2=13^2 25+x^2=169 -25+x^2=169-25 x^2=144 take the square root of both sides and we get 12 as the height. Doing b*h/2 to get the area of the triangular sides we get 12*10=120/2 we get 60 as the amount of cardboard they need to use. For the other side, we use l*w=A to get 260