# What is the surface area for .? math homework?

Topic: What is the surface area for .? math homework?
June 18, 2019 / By Agnes
Question: Surface area of a cylinder? Area of a trapezoid? Area of a triangle? Volume of a pyramid? volume of a cylinder? Volume of a cone?

## Best Answers: What is the surface area for .? math homework?

Timmy | 6 days ago
Surface area of a cylinder?2 pi r^2 + 2 pi r h Area of a trapezoid? 1/2h(b+b1) Area of a triangle? 1/2bh Volume of a pyramid? lwh(1/3) volume of a cylinder? pi r^2h Volume of a cone? 1/3 pi r^2h
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Originally Answered: I have to write a dissertation on something to do with chemistry, what should the topic area be?
I'm not sure what level you're at, but I think an interesting dissertation could consider chirality. This is the nature of things to have a non-superimposable mirror image. Consider your hands. Your left hand and right hand are mirror images of one another, but they are not the same! Chemicals can be the same way. A great chemist Pasteur discovered left- and right-handed crystals under a microscope and picked them apart with tweezers. This was a historic moment as he discovered chirality just by making a chance observation. Mixtures of right- and left-handed molecules are called racemic mixtures. Drugs used to be racemic, until it was discovered that the two could have drastically different effects! The landmark case was that of thalidomide. The origin of the Food and Drug Administration can be traced back to problems with thalidomide. "Thalidomide is racemic – it contains both left- and right-handed isomers in equal amounts. The (R) enantiomer is effective against morning sickness but the (S) is teratogenic and causes birth defects." Practically everything in a living organism occurs as only one enantiomer (the name for left vs right-handed molecules). Scientists still have no idea how this happened. This is also why drug enantiomers can have different effects.
Originally Answered: I have to write a dissertation on something to do with chemistry, what should the topic area be?
Write the dissertation about finding the origin of bacteria in our water. For example, Lake Washington near Seattle had to close some beaches because of a high bacterial count and it was found that the main culprit was dog feces. Previously it was thought that geese feces caused the problem. Since we don't have much industry anymore and we have been drastically increasing our dog flocks, chemical pollution is down but bacterial pollution is up big time.

Rama
in order to get the answer, you need first the formulas: for the area of cylinder:2(pi * radius2) + 2 * pi * radius * height area of trapezoid: height * (base1 + base2) / 2 area of triangle: base * height / 2 volume of pyramid: (1/3) * (base area) * height volume of cylinder: pi * radius2 * height volume of cone: (1/3) * pi * radius2 * height
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Marquis
floor section incorporates the two bases and the realm of the cylinder. SA = 2(pi)r^2 + 2(pi)rh your radius is (a million/2)sixty 5 = sixty 5/2mm and your h = 70mm quantity would be cubic so (pi)r^2 cases h = quantity.
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