A rectangle with sides 5 cm and 10 cm was divided into 5 equal parts, and then each of them was divided

A rectangle with sides 5 cm and 10 cm was divided into 5 equal parts, and then each of them was divided in half. Paint 3 such parts. Determine the area of the filled part of the rectangle.

To complete this task, you need to solve the problem.

Let’s start the solution to this problem by finding the area of a rectangle;

Let’s remember the formula for the area of a rectangle;

S = a * b, where a and b are the sides of the rectangle, substitute the values;

S = 5 * 10 = 50cm2;

Now let’s find out how many parts the whole rectangle was divided into;

First, it was divided into 5 parts, and after each part into two more, it means it turns out;

5 * 2 = 10, parts divided by a rectangle;

We took three parts of them and painted over.

Let’s make the equation:

Sx = (50 * 3) / 10;

Sx = 15cm2.