What is the area of the shaded region? Explain your thinking. A rectangle that is not shaded has a width of 4 centimeters and a height of 3 centimeters. This rectangle is inscribed in the upper portion of a rectangle that is shaded. The shaded rectangle has a width of 18 centimeters and a height of 12 centimeters.

second question
Explain how to find the area of a composite figure composed of simpler geometric shapes

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