Seven feet below sea level is farther below sea level than 4 1/2 feet below sea level

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

The perimeter of ? cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.

Write the ratio as a fraction in lowest terms 1 1/3 to 1 2/3