Cone volume
a pile of gravel is shaped like a cone and has a radius of 6 ft and a height of 9 ft. garden landscaping company purchases some of this gravel. after the gravel that garden landscaping company purchases is removed, the pile has a radius of 3 ft and a height of 6 ft.
how much gravel did garden landscaping company purchase?
use 3.14 to approximate pi and express your final answer in tenths.

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac

Arandomized controlled trial is designed to evaluate the effect of metoprolol in patients with heart failure. while preparing for statistical analysis, the researcher reviews some common types of statistical errors. which of the following statements is true regarding a type i error in a clinical study? a. the study is not significantly powered to detect a true difference between study groups. bthe null hypothesis is true but is rejected in error. c. the null hypothesis is false but is accepted in error. d. type i error is also known as beta and is usually 0.1 or 0.2. e. type i error depends on the study's confidence interval.