The width of the rectangle is 7 cm, and the length is 2 times more, calculate the perimeter and area of the rectangle?

By the condition of the problem, the width of the rectangle is known and we know that the length is 2 times greater.

Let’s find the length of the rectangle:

7 * 2 = 14 cm;

The perimeter is the sum of the lengths of all sides, for a rectangle we write the formula:

P = 2 * (a + b) = 2 * (7 + 14) = 2 * 21 = 42 cm;

The area of the rectangle is the length times the width:

S = a * b = 7 * 14 = 98 cm2.

Answer: P = 42 cm; S = 98 cm2.