The diagram shows a shape made from a trapezium v and a semicircle with diameter DC.
8 cm
D
IC с
4
5 cm
A
B
DC = 8 cm
The shape has area 64 cm2
The height of the trapezium is 5 cm.
Work out the length of AB.
Give your answer correct to 1 decimal place.

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000