Calculate the volume of this cylindrical hollow concrete tube. Give your answer correct to the nearest cubic metre.

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.