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

Question

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  hi

Answer 1

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