5th grade, 7th grade, or 10th grade

Nate cut a circle with an area of 113 square cm out of a square piece of paper. What are the dimensions of the smallest piece of paper he could have used?

7th-10th grade

John drives straight 3 miles, then turns right and drives 4 miles. He turns left and drives 2 more miles. How many mils along the ground would he travel by helicopter?

Hint: you will need to use the Pythagorean Theorem.