Use a real life example to describe surface area

If you answer right ill give brainliest, : )

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?