What is the square root of a perfect square always rational

Pick the description of a geometric object that best matches the real world object box for a deck of card

Which of the following circles have their centers in the third quadrant?

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points