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5. Emily had a play yard for her daughter Grace. It was shaped like a quare and had an area of 100 squar feet. What is the perimeter of the
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5. Emily had a play yard for her daughter Grace. It was shaped like a quare and had an area of 100 squar feet. What is the perimeter of the play yard? A. 10 feet C. 30 feet B. 20 feet D. 40 feet
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Mathematics
3 years
2021-09-05T12:38:37+00:00
2021-09-05T12:38:37+00:00 1 Answers
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Answer:
D perimeter = 40 ft
Step-by-step explanation:
area square = s · s = s²
preimeter square = s+s+s+s = 4s
Given area = 100 ft²
area square = s²
√area square = s
perimeter = 4s
perimeter = 4 · (√area square)
perimeter = 4 · (√100)
perimeter = 4 · (10)
perimeter = 40 ft