The square root of 400 is 20, as 20 multiplied by 20 equals 400. The square root of 196 is 14, as 14 multiplied by 14 equals 196. Therefore, the expression simplifies to 20 - 14, which equals 6.
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it is 400
Yes, they are.
20
It is rational.
square root of ((22 -2)^2 + (27 +10)^2) = square root of (400 + 1369) which is equal to square root of (1769) = 42.05948169