Find the area of the semicircle. Round your answer to the nearest hundredth.

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

How to do this , and can some one explain

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank