Aschool principal order 1000 pencils he gave an equal amount to 7 teachers until he had given out as many as possibel how many pencils are left

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

This is about circle theorems. someone asap : (

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