The volume of a sphere is given by the formula V=\dfrac{4}{3}\pi r^3V= 3 4 ​ πr 3 V, equals, start fraction, 4, divided by, 3, end fraction, pi, r, cubed, where rrr is the radius of the sphere. Which of the following gives the radius of the sphere in terms of the volume of the sphere?

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.