Four pencils are held together with a band the figure on the right shows the bottom end of the pencils and the band . each of the pencils has diameter 10mm. find the length of the band in this position give your answer in terms of pi 

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21

Can some one me with these questions

What is negative 3/9 times negative 2/8 ?