Write an algebratic expression for the are of the rectangle below. PLS HELP DUE IN 10 MIN​

How do you do this geometry problem

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

What is fraction that is equivalent to 3/8