The perimeter of the parallelogram is 32 cm.Find the area if one of the corners is 60 cm larger
May 26, 2021 | education
| The perimeter of the parallelogram is 32 cm.Find the area if one of the corners is 60 cm larger than the right one, and one of the sides is 6 cm.
Opposite sides in a parallelogram are the same;
The sides of the parallelogram are 6 cm;
Then the bases = (32 – 6 – 6) / 2 = 10 cm;
If one of the angles of the parallelogram is 60 ° greater than the right angle and is equal to 150 °;
Then the acute angle is 180 ° – 150 ° = 30 °;
The height, which is the leg of a right-angled triangle, opposite to an angle of 30 °, is equal to half of the lateral side of the parallelogram, which is the hypotenuse:
h = 6/3 = 2 cm;
The area is equal to the product of the height and the base:
S = 2 * 10 = 20 cm².
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