The length of the rectangle is 12 cm and the width is one-fourth of its length. Find its perimeter and area.
August 30, 2021 | education
| In order to find the part of an integer value, you must divide it by the denominator of the fraction and multiply by its numerator.
Let us determine the width of the rectangle, provided that it is ¼ fraction of its length, equal to 12 cm:
12: 4 * 1 = 3 cm.
The area of the rectangle is calculated by the formula:
S = a * b = 12 * 3 = 36 cm².
Let’s calculate the perimeter:
P = 2a + 2b = 2 * 12 + 2 * 3 = 24 + 6 = 30 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.