1.)a rectangle has an area of 72 square centimeters and the length is twice the width. the perimeter of the rectangle

2.)if sides of a square are increased by 4 cm, the area is increased by 40 cm^2. find the length of a side of the original square.

the topic is system of linear equations with two variables

give me the solution

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