How many cubes are needed to build this figure?

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

Can some one me with these questions