Circumference 3.5 dm, which is equal to the length of the second circle, whose diameter

Circumference 3.5 dm, which is equal to the length of the second circle, whose diameter is equal to the diameter of the first circle

To solve this task, you need to find the length of the second circle.

Let’s consider this condition and analyze it.

By the condition of the task, we know the length of the first circle, and we also know that the diameter of the second circle is five-sevenths of the length of the first circle.

Find the value of the diameter of the second circle;

3.5 = 3 1/2 = 7 / 2m;

7/2 * 7/5 = 49/10 = 4.9m – the diameter of the second circle;

Let’s write down the formula for the circumference;

L = P * d;

Substitute the value and get;

L = 3.14 * 4.9 = 15.386m2 – the length of the second circle.