Q&A for How to Calculate the Perimeter of a Square

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  • Question
    What is the perimeter of a garden that measures 16.3m x 16.7m?
    Community Answer
    66 m. The formula for perimeter of a rectangle is 2(l + b). Hence the perimeter is = 2 x (16.3+16.7) = 2 x 33 = 66 m.
  • Question
    If I know two sides of a square, how do I calculate the other sides?
    Community Answer
    One of the fundamental properties of a square is that all sides are equal. This means that if you know just one of its side's length, you also know all the lengths of the other 3 sides.
  • Question
    The four sides of the garden, with fence, measure 10m, 8m, 4m, and 12m respectively. How long is the fence?
    Donagan
    Top Answerer
    Add the sides together.
  • Question
    I know the total square footage of the square, how do I calculate length and width?
    Donagan
    Top Answerer
    The length of a square is equal to its width. Each is equal to the square root of the square's area.
  • Question
    If the area of a square is 144 sq cm, how do I find out its perimeter?
    Donagan
    Top Answerer
    First find the square root of the area. That gives you the length of a side. Multiply that by four to get the perimeter.
  • Question
    If the length of each diagonal is 1.5 cm, what's the perimeter of a rhombus?
    Donagan
    Top Answerer
    If the diagonals are equal, the rhombus is a square. By the Pythagorean Theorem, the square of a diagonal is equal to the sum of the squares of two of the sides, which in the case of a square means that the square of a diagonal equals twice the square of a side. Set up an equation to that effect, and solve for a side. Multiply by four to find the perimeter.
  • Question
    Two side of square are 3x+1 and 4x-2, so what is the perimeter?
    Donagan
    Top Answerer
    All sides of a square are equal in length, so set those two expressions equal to each other. Solve for x, then use the value of x to find the length of a side. Multiply by four.
  • Question
    If 400 is the area of a square, then what is the perimeter of that square?
    Community Answer
    If 400 is the area of the square, then the side length of that square must be the square root of 400, or 20. Multiplying 20 by 4 sides gives 80 as the perimeter of the square. Given the area of A, the perimeter is always √A times 4, or 4√A.
  • Question
    How many significant figures are appropriate to give in the answer when I am calculating the perimeter of a square?
    Donagan
    Top Answerer
    Use the same number of significant digits found in the length and width measurements. If the length and width are given with different numbers of significant digits, use the lower number of significant digits.
  • Question
    Ho do I find the perimeter if I have the diagonal of a square?
    Donagan
    Top Answerer
    From the Pythagorean theorem, we know that the side of a square is equal to the diagonal divided by the square root of 2. So divide the diagonal by 1.41. Then multiply that number (the side) by four to get the perimeter.
  • Question
    The perimeter of a square is 20x + 16y. How do I find the lengths of its sides?
    Donagan
    Top Answerer
    You find the length of a side of a square simply by dividing the perimeter by four.
  • Question
    What is a shape whose area is twice its perimeter?
    Donagan
    Top Answerer
    A square with sides of 8 units each has a perimeter of 32 units and an area of 64 square units.
  • Question
    The perimeter of a square is 400 m. What is the area of the square?
    I_l1ke_gam3s
    Community Answer
    Divide 400 by 4 to get the length of one side of the square. You get 100 m. Multiply 100 by itself to find the area, and you get 10,000 m².
  • Question
    The perimeter of a square is 100 cm. Determine the length of a side.
    Community Answer
    Divide 100 by 4.
  • Question
    If the area of a rectangle is 156 square meters, what are the possible dimensions and perimeters, and which would be the smallest area?
    Community Answer
    Possible dimensions include all pairs of numbers that multiply together to make 156. Examples include 1 m and 156 m, 2 m and 78 m, 3 m and 52 m, and so on. There is actually an almost endless list of such dimensions, including many that do not consist of integers. All of the areas would be the same: 156 sq m.
  • Question
    How do I find the area of a square given the perimeter?
    Top Answerer
    You need to first solve for the length of a side. To do so, divide the perimeter by 4. Then, square that number. That is the area of the square.
  • Question
    How do I find the perimeter of square using mixed numbers?
    Donagan
    Top Answerer
    The inclusion of mixed numbers may complicate the process a bit, but it's still the same process.
  • Question
    If the area of a square is 144, does that mean that the perimeter is 48?
    Donagan
    Top Answerer
    Yes.
  • Question
    The perimeter of a right angle triangle is 180 cm. If the hypotenuse is 78 cm, how do I find the area of the triangle?
    Donagan
    Top Answerer
    You don't have enough information to find the area. You would need to know the height, another side or some of the angles.
  • Question
    How do I find the perimeter of a rectangle?
    Donagan
    Top Answerer
    Add twice the length plus twice the width.
  • Question
    How do I find the perimeter of a rectangle if I know the area of it?
    Donagan
    Top Answerer
    You don't have enough information to find the perimeter. You would also have to know the length of at least one of the sides. (You'd then divide the area by the known side to find the other dimension. Then you could add up the four sides to find the perimeter.)
  • Question
    How do I find the perimeter of a square when the dimensions are given as 2x - 1?
    Donagan
    Top Answerer
    If each side of the square is given as (2x - 1), the perimeter would be 4(2x - 1) = 8x - 4.
  • Question
    If the length of the square is 6 cm, and is connected to a rectangle and they ask the perimeter of the square, do I take the side that's connected to the rectangle into account too?
    Donagan
    Top Answerer
    Yes, if they're asking for "the perimeter of the square." If they're asking for the perimeter of the whole figure, you ignore that side of the square and the part of the rectangle's perimeter attached to the square.
  • Question
    How do I find the perimeter of an area of 108 in squared, if one side is 12 inches?
    Community Answer
    Divide 108 by 12, and that will give you the length of the other side. The length and width are 12 and 8. Then find perimeter = 2*length + 2*width, so the perimeter = 40.
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