Cone Wooden
2 math questions – Need help, my brain is exploding.?
http://i71.photobucket.com/albums/i159/JogaBonito7/DSC00694.jpg (A) The diagram is a sketch of the curve y = (1 – x) (3 + x). Find (a) the coordinates of A and B (b) the largest value and http://i71.photobucket.com/albums/i159/JogaBonito7/DSC00693.jpg (2) The top of a solid wood circular cone is cut leaving the trunk shown in the diagram. The height of the original cone, VO is 16 cm and the radius of the base, OA is 8 cm. The radius of the upper circular face, CB is 6cm. Taking pi to 3.142, find (a FVO) angle (b) the length of organized crime (c) trunk volume (D) Show that the cone slant height of cut is approximately 13.4cm if they have something better to say, then do not post. As easy as that. I hope you still have some common sense. Have a good day.
y = (1 – x) (3 + x), since A and B are on the X axis, x-intercepts are you putting y = x-intercepts 0 (1 – X) (3 + x) = 0 x = 1 and -3 so that A = (-3.0) (A is negative x-axis) = B (1,0) and = (1 – x) (3 + x) y = 3 – x ^ 2-2x y '=- 2x – 2 which is equivalent to zero 2x – 2 = 0 2x = -2 x = -1 substitute y = (1 – (-1)) (3-1) = 2 (2) = maximum value is 4 4 2) ) of the triangle as OAV (OVA) = OV / OA = 16 / 8 = 2 = tan ^ -1 OVA (2) = 63.4 degrees b) from similar triangles and the VOA OV VCB / VC = OA / CB 16 / VC 8 / 6 = = 96 VC / 8 = 12 OC = VO – VC = 16-12 = 4 cm c) The volume of the original cone = (3.1) π r ^ 2 h = (1 / 3) (3.142) (64) (16) = 1072.5 cm ^ 3 small volume cone = (1 / 3) (3.142) (36) (12) = 452.5 for the trunk volume = 1072.5 to 452.5 = 620 cm ^ 3 d) VB VC = ^ 2 ^ 2 + BC ^ VB 2 ^ 2 = 12 ^ 2 + 6 ^ 2 = 144 + 36 = 180 VB = √ 180 = 13.41 tilt height to cut the cone, VB is approximately 13.4 cm
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Types of trees and wooden floors
Wood is an organic material and therefore has special properties associated with it. Since wood comes directly from a natural source has different properties depending on where you came. It is therefore important to know the type of tree the wood is – the type of tree determines the properties the type of wood you are working. different trees have different properties and therefore so does the wood from them.
There is a strong relationship between wood properties and the properties of the particular tree that yielded. For each tree species is a range of wood density it produces. There a rough correlation between forest density and strength, which also refers to its mechanical properties. For example, while mahogany is a hardwood half thick that is excellent for fine furniture making and use of the traditional classic wood products, balsa wood is light, making it useful for building models and the use of light vessels.
The trees are divided into two classes: hardwood and softwood. However, the terms hardwood and softwood are not directly associated with the hardness or softness of the wood (although most of the hardwood cases are actually harder and harder than wood soft). In general conifer tree from bearing cone and hardwood trees have their seeds contained in a seed case. This means that some Examples of hardwoods are trees such as teak, birch, maple and oak with large leaves.
But the classification of different types of wood will not stop there. Two other terms that are useful when learning a bit about the types of wood. Sapwood and heartwood. These terms are often used by companies to flumox clients with different properties of wood but in reality the explanation is simple layers is the outer sapwood of the trunks of trees and is usually a lighter color the heartwood is the inner layer of the tree.
Sapwood plays and an important part of their lifetime of a tree. Is a living tree strange as it is, in general, only the last few outside layers of sapwood are alive. The rest of the sapwood moisture away from the root to the leaves and store food for the tree. When property is the sapwood usually has a higher moisture content than heartwood and is generally smoother and less durable heartwood.
Heartwood refer to the inner layer of the tree. The heartwood term is derived exclusively from their positions and not of any vital importance to the tree. This is evidenced by the fact that a tree can grow with your heart completely rotten, when you think about oak trees you see in the field with all the interior rotten all makes sense. Historically it is said that Carlos hid inside an oak one of Oliver Cromwell – this might be because the wood had rotted heart leaves, leaving only the outer sapwood remaining tree. Some species begin to form heartwood very early in life, so having only a thin layer of sapwood vivo, while in others the change comes slowly.
Probably the kind of wood is not important to you when it comes to installing a wood floor, but unless you have an idea of what the manufacturers and installers are talking. For information on installing hardwood floors and watch a wide range of various woods available in the market will www.timberlandflooring.co.uk
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To read more about the different types of wooden floors available in the UK, visit Timberland Flooring, where there are a wide range of stunning wooden flooring options available for you to choose from.
