To find 20 times the square root of 3, you simply multiply 20 by the value of the square root of 3. The square root of 3 is an irrational number approximately equal to 1.732. Multiplying 20 by 1.732 gives you approximately 34.64. So, 20 times the square root of 3 is approximately 34.64.
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20
Here is an example, radical 20 plus radical 5. Now radical 20 is 2(radical 5) so we can add radical 5 and 2 radical 5 and we have 3 radical 5.
If, by "3 radical 27" you mean the cuberoot of 27, the answer is YES. If you mean 3 times sqrt(27), the answer is NO.
20 times the square root of 2
radical 3 or 6