what is the volume of  a pyramid if its length is 13 ,the width is 12 and hieght is 15?
369949
V(pyramid) = 1/3 * b * h\n= 1/3 * (13 *12) * 15\n= 780
640019
12 sides = 4 feet \n1 side = 4/12 = 1/3 feet\nVolume = (1/3)^3 = 1/27 feet
545831
You give two sides lengths, 10 , 15\nThe length of the other two sides are:\n15*(9/10)= 13.5 \n10 + 6.538348415 = 16.538348415
116020
Volume = pi*r^2*h\n\nWhere pi = 3.14.159...\nr = raduis of cylinder in feet\nh = height of cylinder in feet
646607
Volume is for a solid, and a pentagon is a flat shape.  Do you mean area?  And have you given us all the information.  This obviously isn't a regular pentagon because two of the sides are not equal...  What are we missing?\n\nIf you mean a pentagonal solid, I suppose you could mean the area of the base is 60 sq cm and the height is 8 cm?  In this case it is just the area of the base times the height, or 480 cubic cm.  Don't forget to express the Volume in cubic cm. (cm^3).\n\nOn the other hand, if you are given the *perimeter* of the base being 60 cm and you assume a regular pentagon, then you have a different question....\n\nHere each side is 12.  The formula for the area of a regular pentagon is:\n\nA = 1.720s^2\n\nPlugging in 12 cm, you get:\n\nA = 1.720(144) = 247.68 sq. cm.\n\nMultiply the area of the base by the height (8 cm) to get your final volume:\n\nV = 247.68 * 8 \nV = 1981.44 cubic cm \n\nAgain don't forget the cubic on the units.
521096
The volume of a tube or cylinder is the cross-sectional area times the height/length.  Therfore, A=pi*(d/2)^2...\n\nA = pi * (3/8in)^2 = 9*pi/64in^2\n\nSo...\n\nV = A * length\nV = 9*pi/64in^2 * 800ft*(12in/1ft)\nV = 9*pi/64in^2 * 9600in\nV = 4241.15in^3\n\nHope that helps :)
635866
I might be missing something, but the cubic space something occupies is also referred to as it volume, where:\n\nfor a six sides regular box shape volume = heightxbreadthx depth\n\n( make sure all your measurements are in feet eg 1 foot 5 inches is 1 and 5/12 feet. \n\nHowever this formula is not true for a sphere or a trapezoidal box or a pyramid.  For whcih I'd recommend wikipedia or the old maths textbook as its hmmm, err 18 years since I last did all that stuff.
947383
cubes have all sides with the same length. Volume = length x width x height. So for a cube = length^3
911301
If x = the length of a side of the square base and y = the height, then volume = lengthxwidthxheight \n\n32000 = x^2y\n\ny = 32000/x^2\n\nThere are 5 surfaces, 4 of which are rectangles with area xy and one square with area x^2\n\nSo surface area = 4xy + x^2\n\nBut y = 32000/x^2 so substitute to get\n\nSA = 4x(32000/x^2) + x^2\n\nThat is 128000/x + x^2, or, 128000x^-1 + x^2\n\nFind the derivative and set it = to zero.\nSA' = -128000x^-2 + 2x = 0\n\n2x = 128000/x^2\n\n2x^3 = 128000\n\nx^3 = 64000\n\nFind the cube root of 64000; that's x\n\nPlug in to get y
762511
At least 13 inches...
198865
Volume = (area of the base) x (height)
18689
(-2,1) and (5,1) form the base.\nThe length of the base is 7.\n\nThe height is 5.\n\narea=5*7*(.5)=17.5
430210
Volume of a shphere  = 4/3 * pi * R^3\n\nwhere pi = 3.142 (approx)\nand R is the radius
710674
I hope by width you mean height.  If so then the answer is πr^2 * h\nso π15^2 * 60 \n\n13500π\n or \naprox.  42411.5
890633
1. total area of a box of sides a,b,c is 2(ab+bc+ca)\na=4,b=3,c=6 => surface area = 108 sq.ft\n..\n2.Lateral area = pi*radius*slant ht\npi=3.1415,radius=2m(4m/2), slant ht=15m\nans is 188.49sq.metres\n..\n3.   volume of pyramid = (1/3)* height * base area\n= (1/3)* (6) * (6*6)\n= 72 cu.metre\n..\n4. lateral area of cylinder = 2*pi* radius* height\n=2*3.1415*12*60\n=4523.76cu. mm\n..\n5. total surface area = outer surface + inner surface + top surface + bottom surface\n= 2*pi*8*height + 2*pi*5*height + 2 times ( pi*(8-5)^2)\n[the last term is the sum of top and bottom surfaces which are circular rings]\nheight is not given :(
726531
A=1/2bh is for the area of a triangle.\nV=s^3 is for the volume of a cube.
398958
The area of the equilateral triangle is:\n\nA = 0.433 s^2\n\nA = 0.433 (10 ft)^2\n\nA = 43.3 ft^2\n\nThe volume of the pyramid is:\n\nV = 1/3 A h\n\nV = 1/3 (43.3 ft^2) (6 ft)\n\nV = 86.6 ft^3