One side of the triangle is 20 cm, the other is 4 times larger than the first, and the third side is 12 m

One side of the triangle is 20 cm, the other is 4 times larger than the first, and the third side is 12 m smaller than the other. What is the perimeter of the rectangle?

First you need to find the length of the second side of the triangle.
Since it is 4 times the size of the first side, we multiply 20 cm by the indicated difference.
Will be:
20 * 4 = 80 cm.
Determine the third side of the shape.
To do this, subtract 12 centimeters from the previously found value.
As a result, we get:
80 – 12 = 68 cm.
To find the perimeter of a shape, add the lengths of all its sides.
Thus it will be:
20 + 80 + 68 = 120 + 68 = 188 cm.
Answer: The perimeter of the triangle is 188 cm.