if the area of a triangle is 20cm squared how do you work out the lengths of the sides?
824775
The Area of a triangle is half the area of a square. So take one verticy and take a 90degree line from that up to the other corner.\n\nOh cr@p I'm starting to forget it all now. Too long ago.\n\nIt's something like that.
548292
Assuming that an area may be dissected into triangles, then the area of each triangle is given by \n\nArea = (s(s-a)(s-b)(s-c))^(1/2)\n\nwhere s = (1/2)(a + b + c)\n\nand a, b, and c are the lengths of sides of each triangle -\n\nThe sought for area is (finally) the sum of all the areas of the triangles.\n\nGiven sufficient patience, any arbitrary area will be found.\n\n(Drawing a diagram while slogging through the exercise and looping around the separate triangles in the same direction can yield a shortcut whereby all of the internal perimeters eliminate each other, leaving only the perimeter of the original figure.)
579919
Draw the triangle with the 20 degree angle.  Put a dot on the hypotenuse to represent the object.  Its mass goes straight down from the spot (gravity).  A perpendicular to the hill through the point represents the resultant.  The horizontal vector connects the bottom of the mass vector to the bottom of the resultant (perp.) vector making a 20-70-90 right triangle.  Tan (20) = horiz/vert (vert = mass) \nso horiz = mass times tan(20)
1176005
no, it won't..\n\nHOWEVER there are some other theorems through which you can calculate the length of a certain side of a triangle given the lengths of the other the sides.\n\nLikewise it is also possible to calculate (through analytical geometry) the area of any triangle given the lengths of all sides.\n\nSo, practically, given the lengths of at least two sides of a triangle, you can calculate the length of the third side and then calculate the total area of the triangle.\n\n(8th grade mathematics)
170229
Well, a rectangle is not a triangle it is a parallelogram, I think. It has four right angles and two long sided and two short sides. Therefore, the dimensions are as follows: To figure area it is short side * long side. To figure how long all sides are you simply do two short sides plus two long sides. However, I am assuming that this was trick question to see who is paying attention to what a rectangle is.
303035
If the triangle is a right triangle, you can find the other side by Py's Th and then by the formula,(A=1/2bh).\nIf it is not, you should know the angle they make each other or an adjacent angle. Only if, you can find the area by sine laws or cosine laws.
966422
The area of an equilateral triangle is\nA = (1/4)sqrt(3) * a^2, where a is the length of the side.\nSince the triangle is equilateral, you know that the length of each side is 10/3.\nThe area is\nA = (1/4)sqrt(3) (10/3)^2\nA = (1/4)sqrt(3) (100/9)\nA = (25/9)sqrt(3)
860533
long sides are 24ft and short sides are 9ft.\n\nArea = width x lenth\n216 = 24 x 9\n\nDimensions 24+24+9+9 = 66
865033
okay. so. there's a special set of rules for a 30-60-90 triangle.\n\nthe sides are proportional to each other by the ratio \n\nx : v/( 3)x : 2x\n\nwhere the v/ is the square root.\n\nthat means that the greatest angle corresponds to the greatest length.\n\nbecause the longest side is 7.5 meters, that means that is 2x.\n\ndivide by two for x, and that is the 30* length. (because its the smallest angle, therefore is opposite the smallest length)
1183842
find the are  (base x height = area) and time that by 3........   OR  ........ take each of the length of the sides and times it by 3...
609578
definitely 63 square inches. The formula to find the area of a triangle is A=(1/2) x base x height. That is 0.5 times base times height. So, if you plug in the numbers, you get\n0.5 x 14 x 9 square inches\n(0.5 x 14) x 9 square inches\n(7) x 9 square inches\n63 square inches\n\nMake sure that whenever you look for the area of the triangle, the problem tells you that the numbers are the height and base.\n\nYes, 24 is correct.
558451
The are of a triangle can be found out by this formula...\nsquare root over s(s-a)(s-b)(s-c)\nwhere s=a+b+c&#92;2...\nWhere a, b and c are the sides..\nso i guess u can find the side and then find the perimeter..\nLolz...\nU calculate it urself
680192
The area of a triangle is 1/2 the base time the height.\n\nA=1/2bh\nA=1/2(10)(4)\nA=(5)(4)\nA=20 units^2
458187
find the area of the base and multiply it by the height\n\n(1/2)*b*h1*h2  for a triangular prism h1 is height of the triangle, h2 is the height of the prism\n\npi*(r^2)*h for cylinder, h is height, r is radius of the base
733210
You basically have 2 options. Use a protractor and measure them (The internal angles total 180 degrees).\n\nThe other option is using the trig functions (Sin, cos and tan), however you must have some info on the triangle eg. length of sides to apply any of these.
568015
You add the areas of the six sides.\n.5 x .5 = .25 cm squared    (that's the area of one side)\n.25 cm squared x 6 sides = 1.5 cm squared
826650
area =\n\nx^2 + 2x\n\ncost ($) =\n \n( x^2 + 2x ) * 20\n\n_