A cylindrical gas tank has a radius of 8.4 feet and is filled with approximately 2,261 cubic feet of gas. Which value is the best estimate of the depth/height of the gas tank? Round your answer to the nearest tenth of a foot.

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g