Can you me rounding this number 5.052493438 ft

Yes, that may be possible.

-- When that number is rounded to the nearest hundred millionth,
it becomes  5.05249344 .

-- When that number is rounded to the nearest ten millionth,
it becomes   5.0524934 .

-- When that number is rounded to the nearest millionth,
it becomes   5.052493 .

-- When that number is rounded to the nearest hundred thousandth,
it becomes   5.05249 .

-- When that number is rounded to the nearest ten thousandth,
it becomes     5.0525 .

-- When that number is rounded to the nearest thousandth,
it becomes     5.052 .

-- When that number is rounded to the nearest hundredth,
it becomes  5.05 .

-- When that number is rounded to the nearest tenth,
it becomes   5.1 .

-- When that number is rounded to the nearest whole number,
it becomes   5 .

7. Is maybe 35-12=23 but I hope this is right