How do you find the surface area of the sphere in terms $π$ $pi$ given $S = 4 π r^{2}$ $S=4pir^2$ and r= 2.4 m?

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Answer 1 · 2017-12-07T14:18:27

See a solution process below:

Substitute $2.4 m$ $2.4"m"$ for $r$ $r$ in the formula and calculate the result:

$S = 4 π r^{2}$ $S = 4pir^2$ becomes:

$S = 4 π {(2.4 m)}^{2}$ $S = 4pi(2.4"m")^2$

$S = 4 π 5.76 m^{2}$ $S = 4pi5.76"m"^2$

$S = (4 \times 5.76) π m^{2}$ $S = (4 xx 5.76)pi"m"^2$

$S = 23.04 π m^{2}$ $S = 23.04pi"m"^2$

The surface area of the sphere is $23.04 π$ $23.04pi$ square meters

How do you find the surface area of the sphere in terms πpi given S=4πr2S=4pir^2 and r= 2.4 m?