Write the ratio 21 inches to 9 free as a fraction in simplest form

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

What is the value of x in the this question ?

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.