Rounding 845.7143 to one significant figure results in 800.
Calculate 4.8 multiplied by 37, then divide the result by 0.21:
(4.8 * 37) / 0.21
≈ 845.7143
Now, round the result to one significant figure:
845.7143 rounded to one significant figure is 800.
Therefore,
4.8 × 37 / 0.21
= 800
In the number 845.7143, the first significant figure is 8. The digit following 8 (4) is less than 5, so 8 remains the same.
Therefore, rounding 845.7143 to one significant figure results in 800.