i need math help!! how do i find the total surface area of a rectangular prism?
452695
45*30+30*20+20*45= 5700
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Surface Area = [Base Area] +\n1/2 × Perimeter × [Side Length]\n\nVolume = 1/3 × [Base Area] × Height\n\nThe Surface Area has two parts: the area of the sides (the Lateral Area) and the area of the base (the Base Area). \n\nThe Base Area depends on the shape, there are different formulas for triangle, square, etc. \n\nBut the Lateral Area is surprisingly simple. Just multiply the perimeter by the side length and divide by 2. This is because the sides are always triangles and the triangle formula is base times height divided by 2
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The surface area of any prism equals the sum of the areas of its faces, which include the floor, roof and walls. Because the floor and the roof of a prism have the same shape, the surface area can always be found as follows:\ncall the 'floor' the 'base'. The height of the prism = 'H'.\nThe surface area of a prism = 2 × area of base  +  perimeter of base × H\n\nexamples:\n\nRectangular based prism:\nBase shape: Rectangle, length 'L' and width 'W'\nArea of base: L  × W\nPerimeter of base: 2(L+W)\nSurface area = 2LW + 2(L+W)H\n \nCircular based prism\nBase shape: Circle, radius 'R'\nArea of base: pR²\nPerimeter of base: 2pR\nSurface area = 2pR² + 2pRH\n\nTriangular based prism\nBase shape: Triangle: base 'b', height 'h', and sides S1, S2 and S3 \nArea of base: ½b×h\nPerimeter of base: S1+ S2 + S3\nSurface area = bh + (S1+ S2 + S3)H\n\nAs for lateral area of a cone , If r is the radius of the base, h is the altitude, and l is the length between the vertex and a point on the base circle \nlateral area pi rl=pi r x sq.root of r to the power 2 + sq.root of h to the power of 2\n or try this site- http://www.mathepower.com\n\nThe lateral area of a prism is the sum of the areas of the lateral faces (all the ... How many lateral faces does this prism have?\nWhat is the area of each \n\nelse there are many sites to giv better details matching ur specific figure ...try google for search..all luck..
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It is similar to calculating the area. \n\nIt is a product of Length and Width (L x W).
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measure each diagonal, come up with the area of one triangle X it by 4, then work out the area of the base simple!
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The answer is 13.5 in.\n\nFirst we have that the total area is 178 in^2, and we have the lenght and width, so we just need to write the formula for the area of each side and sum them. We would have an unknown variable: height.\n\n178 = (2*4) + (2*4) + (4*X) + (4*X) + (2*X) + (2*X)\n\n178 = 16 + 8X + 4X\n\n(178-16)/12 = X\n\nX = 13.5
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haha I was just working on my geometry homework and we're doing that right now.. the formula for the volume of a prism is: V=Bh, where B=the area of the base and h=the height of the prism.. that's the equation for ALL prisms..\n\nthe equation for the volume of a cylinder is V=pi(r^2)h\nso it's pi times the radius squared times the height\n\nthe equation for the circumference of a circle is C=2(pi)r\nso 2 times pi times the radius
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2 meters.\n\nLet s be the length of the side. Since the glass top is a square, the area is s^2.\n\ns^2 = 4\ns = +/- square root of 4\ns = 2 or -2\n\nDrop the negative 2 because a side length can't be negative.\n\nBy the way, in the future, you may want to put math problems in the Science/Mathematics category to get better answers.
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The surface area:\nS = 0.5*(B1+B2)*Hs  +  A1 + A2\nWhere B1 & B2 are the perimeters of the 2 bases\n      Hs = Slant height\n      A1 & A2 are the areas of the 2 bases\n\nThe volume:\nV = (1/3)*h*(A1+A2+ sqrt(A1*A2))\nWhere h = the height of the truncated tetrahedron
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There is no specific word as far as i know, but we used to use the term "Total Surface Area.'\n\nThere are different formulas for calculating the total surface area depending upon the shape of the three-dimensional figure.  If you could elaborate your question, one can give you an exact answer; or is this enough?
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The curved surface area is 2*pi*r*h\n\nor 2*3.142*27*12 sq cms\n\nand 2*3.142*17*35 sq mms\n\nyou can do the rest
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lol.\nfind formula for area of spiral.  subtract smaller from bigger.  sry no more help.
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area: l*w = 256\n-> 4w*w = 256\n->w(sqaure) = 64\n->w=8 (width)\n->l = 4w = 4*8 = 32(length). \n\nThere you go.
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T= L + 2B\n\nT is total surface area\nL is Perimeter x Height\nB is base area
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To find the surface area of a cube without measuring a face, you would:\n1) Multiply: length*width\n2) Multiply: length*height\n3) Multiply: width*height\n4) Then you add those three answers up \n5) After you add them, multiply by 2 because a cube has 2 of each face.\n\nHope this helps!!
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So you've got an eight-sided figure and each side is 72-feet.  If you draw horizontal and vertical lines from each vertex (the angles where sides meet) to the other side of the octagon, you'll see that the octagon can be split up into one large square (in the center), four rectangles (up, down, left and right), and four triangles (in the corners).  You following me?  Get out a pencil and get to it!  Okay.  So what are lengths of your square's sides?  You'll note that the square has 72-foot sides, just like the original octagon.  Since you know how to find the area of the square, you're on your way.\n\nNext.  you have four rectangles, each with a length of 72-feet, but the short end - the width, how do we figure out the width of the rectangle?  Okay.  Look at your triangles.  Each triangle has one side of 72 feet - the side which is the outside of the octagon - and then two equal sides - it's an isosceles triangle with a 90-degree angle.\n\nOkay, time to call on pythagoras.  Pythagorean theorem states that a^2 + b^2 = c^2.  What that means is this: If you take the length of sides a and b (the ones we don't know) and square them, and add them together, the answer will be 72-squared (side C).  Too bad I'm not there with you to make this part easier to understand.  We know that a and b are equal in this case because our triangle is isosceles.  Therefore, 2x^2 is equal to 72^2.  This gives us a messy equation wherein our answer is, x is ROUGHLY equal to 51 feet.\n\nSo.  You have a square with sides 72 feet long.  You have 4 rectangles each with length 72 and width 51.  You have 4 triangles each with base 51 feet and height 72 feet.  You know that squares and rectangles have an area equal to length times width, and triangles have an area equal to one-half base times height.\n\nCalculate the area for your 9 figures and add them together.  THAT will be the square footage of your octagon.\n\nWhat... did you think I was going to do it ALL for you?
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Surface area. Seriously. 8D