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Cuboid - Wikipedia, the free encyclopedia - By Euler's formula the number of faces (F), vertices (V), and edges (E) of any ... The term 'rectangular or oblong prism' is ambiguous. Also the term rectangular parallelepiped or .....
Cuboid - Wikipedia, the free encyclopedia - By Euler's formula the number of faces (F), vertices (V), and edges (E) of any convex ... It is also a right rectangular prism. The term 'rectangular or oblong prism' is ambiguous...
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Density of a Cubic Crystal from its Edge Length
Calculation of Density of a Cubic Crystal from its Edge Length - Calculation of Density of a Cubic Crystal from its Edge Length. The edge length of a cubic crystal can be obtained from X-ray studies and knowing the crystal structure posses..
The total surface area of a cuboid is given by the formula A = 2(lw + ..
The total surface area of a cuboid is given by the formula A = 2( lw + wh + lh ). Find the height of a cuboid whose length is 60 cm, width is 50 cm, and total surface area is 14800 cm 2 . => 40 cm or 45 cm or 90 cm or 100 cm..
Calculation of Density of a Cubic Crystal from its Edge Length
Calculation of Density of a Cubic Crystal from its Edge Length. The edge length of a cubic crystal can be obtained from X-ray studies and knowing the crystal structure possessed by it so that the number of particles per unit cell are known, the density of..
Lengths and angles inside cuboids (rectangular boxes)Learn how to calculate side lengths and angles in cuboids (rectangular boxes) using the Pythagoras (Pythagorean) Theorem and simple trigonometry. From www.waldomaths.com. ... math 3D shape cuboid angles Pythagoras Pythagorean trigonometry tan 'tangent ratio' rounding accuracy
How do you work out the volume of a cuboid in cm cubed?A cuboid has a volume of 8m3. The base of the cuboid is square with sides of length x metres. The surface area of the cuboid is Am2. (i) Show that A = 2x^2 +32/x (ii) Find dA/dx (iii) Find the value of x which gives the smallest surface area of the cuboid, justifying your answer.
Question : http://img59.imageshack.us/img59/6830/pentagonlq9.jpg
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Answer : The distance between the vertices is the long side of a triangle having two shorter sides of 7. The included angle is equal to one interior angle of a regular pentagon. The exterior angles total 360 degrees. Each exterior angle equals 360/5 = 72 degrees. So each interior angle = 108 degrees. The triangle is isoceles, so each of its base angles equals (180 - 108)/2 = 36 degrees. Now use the law of sines: 7/sin 36 = x/sin 108 x = 7 sin 108/sin 36 x = 11.326
Answer : The distance between the vertices is the long side of a triangle having two shorter sides of 7. The included angle is equal to one interior angle of a regular pentagon. The exterior angles total 360 degrees. Each exterior angle equals 360/5 = 72 degrees. So each interior angle = 108 degrees. The triangle is isoceles, so each of its base angles equals (180 - 108)/2 = 36 degrees. Now use the law of sines: 7/sin 36 = x/sin 108 x = 7 sin 108/sin 36 x = 11.326
Question : what is the surface areas if the base area is b
what is the perimeter of the base
Answer : If you mean a regular octagonal pyramid then the perimeter of the base is simply (8)(6)=48 feet. The area of one of the lateral surfaces is (1/2)(6)(8) = 24 sq feet. Since there are 8 such surfaces, the total area of the lateral faces is (24)(8)= 192 sq feet. Therefore the total surface area is 192+b. I do not know of such a thing as arectangular octagonal pyramid.
Answer : If you mean a regular octagonal pyramid then the perimeter of the base is simply (8)(6)=48 feet. The area of one of the lateral surfaces is (1/2)(6)(8) = 24 sq feet. Since there are 8 such surfaces, the total area of the lateral faces is (24)(8)= 192 sq feet. Therefore the total surface area is 192+b. I do not know of such a thing as arectangular octagonal pyramid.