Find the area of a circle with a radius of 7 cm.

In order to find the radius of a circle, we need to know the formula:

S = п * R ^ 2, where S is the area of the circle; п is a constant equal to 3.14; R is the radius of the circle.

You just need to know the radius. It is given to us according to the problem statement and is equal to 7 centimeters. Having all the necessary values, we substitute them into the formula and we get the following solution:

S = 3.14 * 7 ^ 2 = 3.14 * 49 = 153.9 (cm²) – area of a circle;

You can not translate the number п, and leave the result if the condition does not indicate that you need to submit a numerical result. Then it will be 49п.

Answer: the area of the circle is 153.9 cm².