An equilateral triangle with side length 20 cm is shown in the diagram, work out the area of the triangle. Give your answer rounded to 1 DP.

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school. each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220