How to multiply scientific notation with different exponents.

Turner's mom measured his room to see how long the wallpaper border needed to be. if two walls are 15 feet long and two walls are 12 feet long, how long should the strip of border be cut?

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?