The Attempt at a Solution
I am just making sure I am doing these right.
For the first one, I used the equation to determine the length it would be on Earth. The length I got was g/pi^2 = 0.993 m. I thought that it would have to stay the same length on Venus too, so I used the equation again, given the length and gravity of Venus, to find the period. My answer: 2.10 seconds.
For the second one, I used the equation again, plugged in 2 seconds for T, 0.904g for g, then found L = 0.898 m. I subtracted this from the original length I found from the first problem. My answer: 0.993-0.898 m = 0.095 m (shorten the pendulum by 0.095 m).