Find the number whose logarithm to base 10 is 2.6025

Answer Details

The logarithm to base 10 of a number is the power to which 10 must be raised to give the number. So, if the logarithm to base 10 of a number is 2.6025, we can write it as:
10^2.6025 = x
Using a calculator, we get:
10^2.6025 ≈ 400.401
Therefore, the number whose logarithm to base 10 is 2.6025 is approximately 400.401. Thus, the correct option is (a) 400.4.