During an online written exam, you want to cheat. But there are rules: 1. Camera on
2. No books in background

please answer and i will mark brainliest

What is the approximate circumference of the circle shown below?

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet