A rectangular prism has a base of 18 cm by 15 cm and a diagonal of 25 cm. Identify its height

Nikolas calculated the volume of the prism. his work is shown below.

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?

One file clerk can file 10 folders per minute. a second file clerk can file 11 folders per minute. how many minutes would the two clerks together take to file 672 folders?