Ineed to know number 12 and how to solve it

17 in long 1.3 ft wide and 8in high what is the volume

Can someone me with these two circle theorem questions asap?

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.