Given the two circles A and B, circle A has a radius of 10 cm. The radius of circle B is half the radius of circle A. What is the area of each circle?
Area of Circle A:
Assume that π = 3.14
Formula: A = π * r^2
Substituting the values, A = 3.14 * (10 cm)^2
Calculating, A = 3.14 * 100 cm^2
Therefore, the area of circle A is 314 cm^2.
Area of Circle B:
Since the radius of circle B is half the radius of circle A, the radius of circle B is 10 cm / 2 = 5 cm.
Using the same formula, A = π * r^2, we can calculate the area of circle B.
Substituting the values, A = 3.14 * (5 cm)^2
Calculating, A = 3.14 * 25 cm^2
Therefore, the area of circle B is 78.5 cm^2.