Physics:Radius and Area

Physics
Tutor: None Selected Time limit: 1 Day

Feb 1st, 2015

the earth is a sphere therefore to get the area of a sphere we use the formula below

 4*22/7*r^2

where r is the radius of the earth

therefore the surface area

convert the radius into meters

3963*1609=6376467

SA=4*22/7*6376467*6376467

=5.11145*10^14

the correct answer is D

Feb 1st, 2015

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