One side of the rectangle is twice the size of the other side. find the area of a rectangle if the perimeter is 54.
August 5, 2021 | education
| In order to find the sides of a given rectangle, let’s make an equation.
Let x cm be the value of the width of the given rectangle;
Then 2 * x cm is the value of the length of this rectangle;
We also know that the perimeter of this rectangle is 54 cm, we compose an equation of the following form:
x + x + 2 * x + 2 * x = 54;
6 * x = 54;
x = 54: 6;
x = 9.
9 cm – the width of this rectangle;
2 * 9 = 18 cm – the length of this rectangle4
Find the area of this rectangle, for this you need to multiply the value of the width of this rectangle by the value of the length of this rectangle:
9 * 18 = 162 cm2 – the area of this rectangle.
Answer: 162 cm2 is the area of this rectangle.
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.