In a rectangle, one side is 28 cm and the diagonal is 35 cm. Find the area of the rectangle.
| December 9, 2020 | education
S of rectangle = ab. We are only given one side (s), so we need to find 2 side. We will do this according to Pythagoras: 35 ^ 2 = 28 ^ 2 + b ^ 2 => b ^ 2 = 35 ^ 2-28 ^ 2 b ^ 2 = 1225-784 = 441 b = 21 Well, and hence S = 28 * 21 = 588 (cm ^ 2)
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