The area is the amount of surface enclosed by a closed figure.
Area of a rectangle = length × width
Area of a square = side × side
For example, consider this situation.
The area of a rectangular pool is 500 square feet. The width of the pool is 20 feet.
Let's find the length of the pool.
|Length||=||500 ÷ 20|
So, the length of the pool is 25 feet.
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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.