[1] seven conference calls are scheduled this morning between 10 and 11 a. m. [2] as a general rule, the company limits the number of conference calls to three per hour. [3] in the future, we should be more careful about scheduling calls. which sentence contains a flabby expression

The sentence that contains a flabby expression is sentence [2]. The sentence starts with the phrase, "As a general rule", which is a flabby expression. It would have been more concise to use the word "Generally". So, the sentence should have been written as, "Generally, the company limits the number of conference calls to three per hour."

The answer is "a"radius = 12.7 unitsdiameter = radius × 212.7 units × 2 = 25.4 units