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A phone book has 3 dimensions, and they are length, width, and thickness. It has 6 faces, and they are the front, back and the four "sides" or "edges" of the book. These are all faces, and the surface area will have to account for all the faces. Let's break it down and find that surface area. Picture the book on a table in front of you with the back of the book (called the spine) on your left. The book's cover is length x width, and you have a front and back cover. Take that length x width x 2 to find the area (in square units) of the front and back covers. Now all you have to do is take the thickness x length x 2 to find the area of the back of the book and the front of the book, and then take the thickness x width x 2 to find the area of the bottom and top edges of the book. Add the three numbers and you have the surface area of the book. Want an example? Let's have at it. A 4 inch thick phone book has covers that are 8 by 11 inches. The covers (both of them) are 8 x 11 x 2 = 176 in2 for an area. The front and back sides or edges of the book have an area that is 4 x 12 x 2 = 96 in2 for an area. The top and bottom sides or edges are 4 x 8 x 2 = 64 in2 for an area. We have 176 + 96 + 64 = 336 in2 for the surface area of that phone book. Simple once you break it down and think it through.
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What is surface area and how you can decrease or increase surface area?
Surface area refers to the total area that covers the surface of an object or structure. To decrease surface area, you can reduce the dimensions of the object or change its shape to be more compact. To increase surface area, you can add extensions, rough textures, or indentations to the object's surface.
How hot does 300 ml of water get after being on a hotplate for 30 sec?
To answer this question we would need to know the BTUs of the hot plate, the area of the hotplate's surface, the interconnecting area of the hotplates surface and the water container. The Heat capacity of water we can get from a reference book.
Which covers more surface area a flat surface or a bumpy surface?
A bumpy surface covers more surface area than a flat surface because the bumps add extra surface area. This is due to the irregularities and protrusions on the bumpy surface that increase the overall area that comes into contact with other objects.
Who much of the substance is exposed on the surface?
The amount of substance exposed on the surface depends on the surface area of the substance. A substance with a larger surface area will have more exposed surface compared to a substance with a smaller surface area. Factors like particle size and shape can also affect the amount of substance exposed on the surface.
What is the surface area of a human foot in percentage?
The surface area of an average adult human foot is about 1.5% of the total body surface area. This means that the foot occupies a relatively small percentage of the body's overall surface area.
