1. If the square has a perimeter of 36 inches, you know each side is 9 inches (36 divided by 4). You multiply the length and width (9 times 9) to get 81 square inches.
2. Perimeter is the sum of all the sides. Rectangles have pairs of sides that are the same length and width, so just subtract 2 (7 cm) from 35, and divide that by 2. (35 -2(7)=35-14=21), 21/2 =10.5 cm.
3. Use the Pythagorean Theorem to solve this one. The diagonal makes the square into two big triangles, with each diagonal stretching all the way across the square. The diagonal is the hypotenuse (c squared). The other sides are "a" and "b". You know they are the same length since it is the side of a square, and a squared plus b squared equals c squared. c squared =7 squared=49. Both a
squared and b squared equals 24.5. Take off the square roots, and you get that both a squared and b squared equal square root 24.5. Multiply those two values together, and the area of the square is 24.5 feet squared. Sorry if this is a little confusing. I didn't know how else to explain it.
XD!! I tried my best (:
Have a great day!
