Find the perimeter of the rectangle if its diagonal is 15cm and one of the sides is 9cm.
| August 10, 2021 | education
By the Pythagorean theorem, we determine the length of the second side of the rectangle.
BC ^ 2 = AC – AB ^ 2 = 15 ^ 2 – 9 ^ 2 = 225 – 81 = 144.
BC = 12 cm.
Determine the area of the rectangle.
Savsd = AB * AD = 9 * 12 = 108 cm2.
Answer: The area of the rectangle is 108 cm2.
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