Respuesta :

Angelav3

Sphere SA= 4*pi r^{2}

r= 3.5

pi =3.14

Sphere SA= 4*3.14*12.25

Sphere SA= 153.86

JeanaShupp

Answer: [tex]153.86\ cm^2[/tex]

Step-by-step explanation:

The surface area of a sphere is given by :-

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

Given: Diameter of sphere = 7 cm

then radius of sphere =[tex]\frac{7}{2}=3.5\ cm[/tex]

Therefore, the surface area of the given sphere will be :-

[tex]\text{Surface area }=4(3.14) (3.5)^2\\\\\Rightarrow \text{Surface area }=153.86[/tex]

Hence, the surface area of the sphere = [tex]153.86\ cm^2[/tex]

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