Find the perimeter of △DEF if △DEF~△CBF,
the perimeter of △CBF
is 27, DF=6,
and FC=8.
Express your answer as a decimal, if necessary.

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.