The square root of 261 can be written as the square root of (9x29). Now the product rule for square roots tells us this is the same as square root of 9 multiplied by the square root of 29. This is 3xsquare root of 29. The square root of 29 can only be approximated.
One approximation to square root of 261 is 16.1555.
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The square root of 15 times the square root of 5 can be simplified as the square root of (15 * 5), which equals the square root of 75. The square root of 75 can be further simplified as 5 times the square root of 3. Therefore, the square root of 15 times the square root of 5 is equivalent to 5 times the square root of 3.
the square root of 3, the square root of 5, the square root of 6, the square root of 7, the square root of 8 etc
Square root (75) / square root (3) = 5