You might need to solve for a missing length on some of these. round answer to the nearest tenth.

20. Note that the given figure is a parallelogram which means it is a quadrilateral with two pairs of parallel and equal sides:The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.

(AC)2 = (AD)2 + (CD)2

(5in)2= (3in)2+ (CD)2

25 = 9 + (CD)2

25 - 9= (CD)2

16 = (CD)2

Taking square root of both sides, we have:

√16 = (√CD)2

4 = CD

h = 4 in

(Answer Without Area)

Finding area:-

Hint: you can use the above

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."