math
posted by james .
The earth has a radius of 6,380 km. The formula for the volume of a sphere is
��
V = 4/3
ðx^3, and the formula
for surface area of a sphere is A = 4ðx^2 . Find the volume and surface area of the earth and write the answer in
scientific notation with two numbers after the decimal

math 
PsyDAG
V = 4/3 π r^3
A = 4 π r^2
π = 3.1416
6,380 = 6.38 * 10^3 (scientific notation)
Insert values and calculate.
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