In a class of 20 boys, 16 play soccer, 12 play hockey and two are not allowed to play games. How many students play soccer and hockey?
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I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side