The diameter, d, of a sphere is 17.8 mm calculate the spheres volume, v
use the value 3.14 for pi and round your answer to the nearest tenth

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)