A cylindrical pencil holder is shown below. The height is 18 cm and diameter 4 cm.
a) Find the capacity of the pencil holder?
b) The outer curved surface area is covered with colored paper. Calculate the area of the paper?

Solve the problem by using a venn diagram a group of students were surveyed about their taste in music.they were asked how they like three types of music: rock, country western and jazz.the results are summarized below: no one dislikes all three types of music.six like all three types of music.eleven don’t like country western.sixteen like jazz.three like country western and jazz, but not rock.six don’t like rock.eight like rock and country western.seven don’t like jazz.how many students were surveyed?