Determine the surface area of a sphere with radius 2 meters.

A. [tex]$16 \, m^2$[/tex]
B. [tex]$50.3 \, m^2$[/tex]
C. [tex][tex]$32 \, m^2$[/tex][/tex]
D. [tex]$24.2 \, m^2$[/tex]



Answer :

To determine the surface area of a sphere, you can use the formula for the surface area of a sphere, which is:

[tex]\[ \text{Surface Area} = 4 \pi r^2 \][/tex]

where:
- [tex]\( r \)[/tex] is the radius of the sphere
- [tex]\( \pi \)[/tex] is a mathematical constant approximately equal to 3.14159

Given that the radius [tex]\( r \)[/tex] is 2 meters, we substitute this value into the formula:

[tex]\[ \text{Surface Area} = 4 \pi (2)^2 \][/tex]

Calculate the square of the radius:
[tex]\[ (2)^2 = 4 \][/tex]

Now multiply this result by 4:
[tex]\[ 4 \pi \times 4 \][/tex]

Therefore:
[tex]\[ \text{Surface Area} = 16 \pi \][/tex]

Next, substitute the value of [tex]\(\pi\)[/tex] to get a numerical result. Using [tex]\( \pi \approx 3.14159 \)[/tex]:

[tex]\[ \text{Surface Area} \approx 16 \times 3.14159 \][/tex]

[tex]\[ \text{Surface Area} \approx 50.2655 \][/tex]

Thus, the surface area of the sphere with a radius of 2 meters is approximately 50.2655 square meters.

From the given options, the closest match to 50.2655 is:
B) [tex]\( 50.3 \, m^2 \)[/tex]

So, the correct answer is:
B) [tex]\( 50.3 \, m^2 \)[/tex]