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Know your squares: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169 196, 225, ... (Also know that the square of a thousand is a million.) To estimate the square root of 50, for example, since 50 is just a little bigger than 49, its square root is just a little bigger than 7.
There are ways to squeeze one more decimal point out, but they are usually more trouble than they are worth, since calculators are so common. Just think of the square root of 50 as "seven point something".
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What is the square root 22?
Using a calculator, the square root of 22 is found to be 4.69041576. However, you can find an approximation without using a calculator: √ 22 = √ (44/2) = √ ((4*11)/2) = 2√ (11/2) = 2 √ 5.5 If you happen to know the square root of both five and six, than you can estimate the square root of 5.5. Alternatively, you could Find the square root of 11 and divide it by the square root of 2. The first method is probably easier. I would estimate the √ 5.5 at about 2.34, which when multiplied by 2 would equal 4.68, which is pretty close to the calculator answer.
How many square feet is 32 feet x 12 feet roof?
384 square feet - without using a calculator !
What is the area of a room that is 3 meters wide and 4.5 meters long?
13.5 square metres - without using a calculator !
What all can a person calculate by using a square footage calculator?
One thing that can be calculated using a Square Footage Calculator is the Length and Width of a Rectangle, Circle, Square or Triangle. This comes in handy for calculating room sizes.
How do you find the square root of 131?
using calculator , it will be equal to11.44
