Please answer this question for me.

Aladder that is 30 ft long needs to reach 27 ft up a building. what should the angle of the vertical be?

Ahomeowner plans to hang wallpaper on one wall of a bedroom that is 10 feet long if a stripe of wallpaper is 20 inches wide and stripes or hung vertically how many stripes on wall paper with the homeowner required

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3