Weegy: 20 feet * 20 feet = 400 square feet. She has to wax 400 square feet.
User: What is 39 squared?
Weegy: 39 squared is 1521.
User: Which of the following is a composite number?
Weegy: 6, 24, 51, 72, 105 contains only composite numbers.
User: Which answer choice contains all the factors of 10?
Weegy: All the factors of 10 are 1, 2, 5, 10.
User: Which of the following is a perfect square?
Weegy: 100 is a perfect square. (10^2 = 10 x 10 = 100)
User: What is the value of 12.5 × 10 ?
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