The width of the rectangle is 3 cm, which is 4 times less than the length. draw a rectangle.

The width of the rectangle is 3 cm, which is 4 times less than the length. draw a rectangle. calculated the perimeter and area.

By condition, the width of the rectangle is known and it is known that it is 4 times less than the length, which means that the length is 4 times greater. Find the length of the rectangle:

1) 3 * 4 = 12 cm – length;

We calculate the perimeter of the rectangle using the formula P = 2 * (a + b) and substitute the data:

2) P = 2 * (3 + 12) = 2 * 15 = 30 cm;

Find the area by the formula S = a * b:

3) S = 3 * 12 = 36 cm2.

Answer: perimeter 30 cm, area 36 cm2.