Help please its really hard

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Can someone answer this question? : )

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?