# The lengths of the two circles are 24.8 cm and 36.5 cm. Find the ratio of the areas of the circles bounded by these circles.

May 30, 2021 | education

| 1) Circumference: C = 2 * pi * R.

Let R be the radius of a circle with a length of 24.8 cm; and r – from 36.5 cm.

Find R:

2 * pi * R = 24.8 cm;

R = 24.8 / (2 * pi);

R = 12.4 / pi.

Let’s calculate r:

2 * pi * r = 36.5 cm;

r = 36.5 / (2 * pi);

r = 18.25 / pi.

2) Area of a circle: S = pi * R ^ 2.

Then S (R) / S (r) = pi * R ^ 2 / (pi * r ^ 2) = R ^ 2 / r ^ 2 = (12.4) ^ 2 / (18.25) ^ 2 = 0 , 4617.

Answer: 0.4617.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.