Desmos Unit 6.2, Lesson 9: Practice Problems
3.
A park fountain sprayed 20 gallons of water in an hour, then was turned off for awhile.
When it was turned back on, it sprayed 30 gallons in of an hour.
Explain how you know that the fountain sprayed water at the same rate both times it was on.

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?