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

Question

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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Thiên Ân 3 years 2021-09-05T12:38:37+00:00 1 Answers 0 views 0

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  1. Acacia
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    2021-09-05T12:40:06+00:00
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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

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