Answer:
15 feet, 7.5 square feet
Step-by-step explanation:
Perimeter = 6.5 + 2.5 + 6
= 15 feet
Area = ½ × 2.5 × 6
= 7.5 feet²
What language is this in because I don't understand any of it?
Answer:
v = 729 in³
Step-by-step explanation:
v = 9 * 9 * 9
v = 729 in³

If

and

share no common elements, then

, which means

On the other hand, if the smaller set is entirely contained within the larger set, i.e.

, then

, and so

.