Parallelogram diagonals = 17 and 19 cm, one side 10 cm. Find the other side.
September 29, 2021
The sum of the squares of the diagonals of a parallelogram is equal to twice the sum of the squares of its two adjacent sides:
17 * 2 + 19 * 2 = 2 (10 * 2 + X * 2);
289 + 361 = 200 + 2x * 2;
2x * 2 = 450;
x * 2 = 225;
x = 15.
Answer: 15 cm.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.