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Mrs brown put a wallpaper border around a room that is 10feet long and 9feet wide how long is the wallpaer border what is the area of the floor in the room?
Wiki User
∙ 14y ago
Perimeter = 38 feet
Area = 90 square feet
Wiki User
∙ 14y ago
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The length of a rectangular floor is 2 feet more than its width The area of the floor is 168 square feet Kim wants to use a rug in the middle of the room and leave a 2 foot border of the floor visib?
12 and 14
The sum of the base and the height of a triangle is 20cm Find the demesions for which the area is maximum?
If we say that the base width is "b", the height is "h", and the area is "a", then we are told that: b + h = 20 ∴h = 20 - b Now, given the nature of a triangle, we know that it's area is half it's base times it's height, so we can also say: a = bh/2 Now we can combine those equations, narrowing it down to one variable ∴a = b(20 - b)/2 ∴a = 10b - b2/2 This equation gives us a parabola. Looking at the equation, you can see that it's an inverted parabola, with it's peak pointing "upwards". To find the point at which that parabola peaks, we need to know when it has a slope of 0. To find that point, we first need the slope of the curve, which we can get by taking it's derivative: a = 10b - b2/2 ∴a' = 10 - b if a' = 0, then b = 10. ∴ The highest point on that curve occurs when b = 10, ie, when it's base has a width of ten and when it's height is also 10. This makes sense. Consider: the highest ratio of area to border in a rectangle will happen when that rectangle is a square. Since the area of a rectangle is in fact half the area of the a square with the same width and height, that same relationship will hold true. So in order to get the maximum ratio of area to perimeter in a triangle, it's width and height should be the same.
A wallpaper border around a room that is 10 ft long and 9 ft wide how long is the wallpaper border?
90 square feet
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form_title= Wallpaper Borders form_header= Add borders to your wallpaper. What color borders would you like?*= _ [50] Have you ever installed wallpaper before?*= () Yes () No What size border would you like?*= _ [50]
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There are so many tools which can be use to install border over wallpapers, like adobe Photoshop, ms paint, coral draw. All you have to do open the wallpaper in these softwares and select the border style, line thickness, color and make your border. To download free Islamic Wallpaper visit http://www.islamicnamesdirectory.com/Free_Islamic_Wallpaper.htm.
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form_title= Girls Wallpaper form_header= Find the perfect wallpaper for a young girl. How old is the girl?*= _ [50] What color wallpaper would you like?*= _ [50] Do you want a matching border?*= () Yes () No
