The president of a secret society of 65 members calls an emergency meeting in 2 days. the president calls the secretary and tells him the meeting time and place. The secretary calls 4 members and asks each of them to call 4 more members and each of them call 4 more members and so on until each of the 65 members have been notified. What is the greatest number of members who do not need to make a phone call?

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )