Answer:
Step-by-step explanation:
Multiply 5*3 to get 15, and each x and y is squared, so 5xy needs another set of x and y to have two xs and ys in the final expression, so you multiply by to get your answer.
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pi4
Step-by-step explanation: Formula is piD, diamter is 4, so pi4 which equals 12.56
number 2)
Explanation step by step
Answer: 11 1/9