A cylinder has a volume 114cm what is the volume of a cone with the same radius and height?

Alawn mower manufacturer incurs a total of 34,816 in overhead costs and 388 per lawn mower in production costs. how many lawn mowers were manufactured if the average cost of productions is 660

This is about circle theorems. someone asap : (

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²