Please capitalize where necessary: 4 will a lion roar in the forest, when he hath no prey? will a young lion cry out of his den, if he hath taken nothing?
A: 4 Will a lion roar in the forest, when he hath no prey? will a young lion cry out of his den, if he hath taken nothing?
Q: dimensions of the vacuum cleaner (wxdxh) 24.5x24x45.5 cm

A: Dimensions of the vacuum cleaner (WxDxH) 24.5x24x45.5 cm
Q: the uup remain true to their founding principles - commitment to the union and british citizenship.
A: The UUP remain true to their founding principles - commitment to the Union and British citizenship.
Problem: these reactions are very appropriate and are always welcome, so you father place and fair.
Can you repeat this sentence, but capitalize it?
Answer: These reactions are very appropriate and are always welcome, so you father place and fair.
Text: similarly, virus invasion, improper download, software crash while extracting archive, use of improper file extraction technique etc are some accountable factors for broken rar archive.

Correct capitalization: Similarly, virus invasion, improper download, software crash while extracting archive, use of improper file extraction technique etc are some accountable factors for broken RAR archive.
Problem: you’d still have the roll-up rules — i haven’t really used them so i don’t know too much about them.
Can you repeat this sentence, but capitalize it?
Answer:
You’d still have the roll-up rules — I haven’t really used them so I don’t know too much about them.