Question

Which whole number is closest to the square root of 350?

Answer 1

We know that 324 < 350 < 361
or, ${18}^2$< 350 < ${19}^2$
So, the square root of 350 lies between 18 and 19.
Since 350 is closer to 361 than to 324, thus, 19 is closest to the square root of 350.