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31 votes
31 votes
A square has an area of 457.90m2 work out the perimeter of the square

User Alois Cochard
by
2.8k points

1 Answer

16 votes
16 votes

Answer:

perimeter = 85.6 cm (nearest tenth)

Explanation:

Area of a square =
x^2, where
x is the length of one side

Given area = 457.90 m²²

⇒ 457.90 =
x^2


x=√(457.9)


x=21.4 \ \textsf{cm (nearest tenth)}

Perimeter of a square =
4x, where
x is the length of one side

⇒ perimeter =
4 * √(457.9)

⇒ perimeter = 85.6 cm (nearest tenth)

User Alexandre FILLATRE
by
3.0k points
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