Calculate the perimeter of a rectangle that is 10 cm long and 7 cm wide.

We begin to solve the problem with the condition: you need to calculate the perimeter of a rectangle, which is 10 cm long and 7 cm wide.
To find the perimeter of a rectangle, you need to add the values of all its sides, and since the opposite sides of the rectangle are equal, the formula P = 2a + 2b is used for this.
Substitute the known values into the formula and get: P = 2 * 10 + 2 * 7.
Let’s do the multiplication and get:
P = 20 + 14
Let’s add and get the answer:
P = 34 cm
Answer: the perimeter of the rectangle is 34 cm.