Calculate the surface area of the ball if the radius of the ball is 0.25 m.

To solve this task, we will find the surface of such a geometric figure as a ball. To do this, recall the formula for the surface area of a ball;

S = 4 * P * R^2, where S is the area, P is the number “PI” = 3.14, R is the radius of the ball.

Knowing the radius of the ball, according to the condition of the problem, 0.25 m, we substitute the given formula and find the surface area of the ball;

S = 4 * 3.14 * 0.25^2 = 12.56 * 0.0625 = 0.785m2.

Let us express the found area in square centimeters, for this we recall that

1m2 = 10000cm2;

Knowing this we will find;

0.785m2 = 0.785 * 10000 = 7850cm2.