between 10 and 11
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Square root of 217 for apex
Irrational.
The square root of a negative number cannot be expressed with integers. The square root of a negative number is always imaginary.
10.95445Square Root of 120The square root of 120 is 10.954, but it is easier to say "square root of 120." You could also reduce itSQRT(120) = SQRT(12) * SQRT(10) = [SQRT(4)*SQRT(3)] * [SQRT(5) * SQRT(2)] =2 * SQRT(3) * SQRT(5) * SQRT(2)It is common to reduce large numbers under the radical to a string of factors having prime numbers under the radicals.
There are 144 square inches in one square foot, so there are 17,280 square inches in 120 square feet.