Area and Perimeter

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13 Terms

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Perimeter of a Rectangle

2 x [l+w]

2
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Perimeter of a square

4 x s

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Perimeter of a circle

2TTr

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Perimeter of a triangle

s + s + s

5
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Area of a Square

The area of a square is calculated by squaring the length of one of its sides. The formula is given by: Area = side length².

6
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Area of a Rectangle

The area of a rectangle is calculated by multiplying its length by its width. The formula is given by: Area = length × width.

7
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Area of Rhombuses and Kites

½ xy

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Area of a Parallelogram

b x h

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Arc Length

theta/360 × 2TTr

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Area of a Trapezium

½ x [a+b] h

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Area of a Triangle

½ [b x h]

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Area of a Circle

TT x Rsquared

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How to find diameter / radius with area already given

the fraction wont always be 1/2. can be ¾ or ¼

<p>the fraction wont always be 1/2. can be ¾ or ¼ </p>