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A golf ball has a radius of 0.8. If there are 42 dimples per square inch of the ball approximately how many whole dimples are on the entire golf ball

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The radius of a sphere is given by the equation S.A. = 4pir^2 where r is the radius.
 
So we have to find the surface area and then once we do we will multiply it by 42 since there are 42 dimples per square inch.
 
S.A = 4 x pi x (0.8)^2 = 8.024 square inches multiplied by 42 gives us 337 dimples