Correct, give meh Brainly ples. Wait i apologize i only read the first question i don't know about the others but the first one is correct. Give meh Brainly ples
Answer:
I think it would be 3/4
Step-by-step explanation:
The new square has length: 10 + l, where l is the original length of the square, and it's area is (10 + l)^2;
So, we solve the equation: 3 x l^2 = (10 + l)^2;
Then, 3 x l^2 = 100 + 20 x l + l^2;
Finally, 2xl^2 - 20xl - 100 = 0; / ÷2;
l^2 - 10l - 50 = 0 (we use the quadratic equation formula);
The only positive solution is l = 5(1+ \sqrt{3} );
8,000 meters in 8 kilometers
