Aswimming pool is 21 feet in diameter. what is the circumference of the swimming pool. use 22/7 for pi

Evaluate the following expression 1/3^2

1. what expression would be the same as 6x+x+0 2. find the prime factorization of 60 3. write the expression for 6 + x in words.

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?