Problem

We can use the formula $r=\sqrt{\frac{S}{12.6}}$ to relate a ball's surface area $S$ (in square centimeters) to its radius $r$ (in centimeters). Suppose a ball has a radius of 12,12 centimeters. What is its surface area? Carry your intermediate computations to at least four decimal places, and round your answer to the nearest tenth. square centimeters

Solution

Step 1 :We are given the radius of a ball and a formula that relates the radius and the surface area of the ball. The formula is \(r=\sqrt{\frac{S}{12.6}}\).

Step 2 :We can rearrange this formula to solve for \(S\) (the surface area) given \(r\) (the radius). The rearranged formula is \(S = 12.6 * r^2\).

Step 3 :We substitute the given radius of 12.12 cm into this formula to find the surface area. So, \(S = 12.6 * (12.12)^2\).

Step 4 :After calculating, we find that \(S = 1850.8694399999997\).

Step 5 :We round this to the nearest tenth to get the final answer. So, the surface area of the ball is approximately \(\boxed{1850.9}\) square centimeters.

From Solvely APP
Source: https://solvelyapp.com/problems/EsvlDB7TPH/

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