- AREA AND PERIMETER
PERIMETER OF SQUARES AND RECTANGLES
Perimeter of Squares and Rectangles
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The perimeter is calculated by adding together all the lengths of the sides of the shape.
Perimeter of a rectangle = length + width + length + width
= 2 × (length + width)
Perimeter of a square = side + side + side + side
= 4 × side
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.