does anyone know about area of triangle?
89513
There are so many way to find the area of the triangle, depends on what you know about that triangle.\n1, If you know the height and the base: the area is\nA=base*height*(1/2)\n\n2, If you know 2 sides of the triangle, and the angle in between that 2 sides.\nLet the 2 sides be (a) and (b), the angle be C.\nArea would be equal to\nA= a*b*sinC/2\n\n3, If you dont know any angle, but you know all 3 sides.\nLet 3 sides be equal to a, b, and c. Let s= (a+b+c)/2\nThe area can be calculated using:\nA= square root of [s*(s-a)*(s-b)*(s-c)]\n\n4, If you know all 3 angles, and 1 side of the triangle.\nLet the 3 angles be A, B and C, and the side be a which is opposite of angle A.\n\nA= (a^2*sinB*sinC) / (2*sinA)
493708
the formula for the area of any regular shape is \n(pa)/2, so there is no multipling the base by 2 involved.\np=perimeter\na=apothem
904847
The total area or the can is give by:\nArea of curved surface = 2π r h\nArea of top of can = π r²\nArea of bottom of can = π r²\n-----------------------------------------\nTotal area (A) of can = 2π r h + 2 π r²\n A = 2π r h + 2 π r²\n A - 2 π r² = 2π r h\n (A - 2 π r²) / 2π r = h\n h = (A / 2π r) - r\n\nIt's the best I can do for you based on the information given.
926515
Let x be the length for the square and 14-x for the triangle.\n\nThe area of the square is (x/4)^2 = (x^2)/16.\n\nThe height of the triangle is sqrt(3)(14-x)/6 and the base of the triangle is (14-x)/3, so the area of the triangle is\n\n1/2 bh = [(14-x)/6] [sqrt(3)(14-x)/6] = (14-x)^2 sqrt(3)/36\n\nTotal area A = (x^2)/16 + (14-x)^2 sqrt(3)/36\n\nA = [9x^2 + 4(x^2 - 28x + 196) sqrt(3)] / 144\n\nA = [(9 + 4 sqrt 3) x^2 - (112 sqrt 3) x + (784 sqrt 3)] / 144\n\ndA/dx = [2(9 + 4 sqrt 3) x - (112 sqrt 3)] / 144 = 0\n\n(9 + 4 sqrt 3) x = 56 sqrt 3\n\nx = (56 sqrt 3) / (9 + 4 sqrt 3) = 6.0895 meters  (Answer)\n\nThe area of the square is 2.32 m^2.  The area of the triangle is 3.01 m^2, and the total area is 5.33 m^2.
921650
The area of a triangle is half base times height.\n\nCould you properly define the length of the base, height and hypotenuse?
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.
422511
if u kno the base and height.. then area= (base x height)/2\n\nif the triangle is scalar,\nthen :\n\nfirst find s, using hero's formula\n\ns= (a+b+c)/2   .... where a,b,c are the sides of triangle.\n\nthen , area = squareroot(s x (s-a) x (s-b) x (s-c)
726837
so the equation of a line which cuts off an area from the first quadrent is y=mx+b. this line has a negative slope. \n\nthe area cut off is therefore a triangle. area of triangle is .5*base*height. height for the triangle is b and base is (-b/m).\nthese values were obtained as follows:\n\nheight is simply when x=0, so y(height of the triangle)=0+b.\nbase is when y=0, so 0=mx+b. x(base of triangle) = -b/m\n\n\nplug these into the equation for area gives A=-.5*b^2/m.\nbecause they pass through pt (3,5) 5=m*3+b\n\nsubstitute b into the equaiton for area. this gives u a formula for area in terms of m only.\n\ndiffernetiate A in terms of m. ie. find dA/dm\n\nset dA/dM =0 and solve for m.\n\nto test whether this is a maximum or minimum for area, u should find d^2A/dm^2 ie. second derivative and see if it is positive or negative. \n\nnow u have a value for m which u can plug back into 5=m*3+b to solve for b.
845226
If the square has an area of 36 sq. units, then each side is sqrt(36) or 6.  This means that the common side of the triangle is 6 units.  Since it is an equilateral triangle, then all three sides are 6 units, so the perimeter of the triangle is 6 * 3, or 18 units.
193691
area = r^2 * pi\narea = 9.8^2 * 3.1415\narea = 96.04 * 3.1415\narea is about 301.71
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
65876
Its 65 sq.ft.\nI got this answer by the formula:-\nArea of Triangle=1/2*base*height
953741
Just break the pentagon up into 5 triangles.  You can then add together the area of the 5 triangles to get the total area.
891617
The triangle area formula is\n\nA = 1/2 b h\n\na = 1/2(5)(2)\n\nA = 5/2(2)\n\nA = 10/2\n\nA = 5\n\nThe area of the triangle is 5 feet\n\nThe answer is " a "\n\n- - - - - - - - - - - -s-
610782
A circle has 360 degrees. Now imagine that from the icosagon you can make 20 equally-sized triangles. The angle made by each triangle is 360/20=18 degrees. The other two angles of each triangle are both 81 degrees.\n\nThe basic formula for the area of a triangle is 1/2 base x height. How do we find these? Well, imagine that from each of the 20 triangles we make two additional right triangles. In doing this we know several things:\n\n-The hypotenuse is equal to 6.5 cm (the radius).\n-The angles of the smaller triangle are now 9 degrees, 81 degrees, and 90 degrees.\n-The sine of 9 degrees is equal to the opposite side divided by the hypotenuse. If we multiply this value by 6.6 we get the length of the opposite side ("1/2 base").\n-The sine of 81 degrees multiplied by 6.5 gives us the "height".\n-Once you compute each value (1/2 base and height) you multiply them by each other and you get the area of the triangle.\n-Multiply the area of that triangle by 20, since you have 20 of them. Voila.
174683
The simple way to find the area of any shape is to break it up in to trangles and squares.  \n\n\nOr use integration... but i do not think that is what you are looking for
38263
5.196 (3 times root 3)\nDive the triangle into 3 equal triangles.  Then divide each one of those triangles into 2 triangles.  The hypotnuse of each triangle has a length of 2, and by trig. (it is a 30-60-90 triangle) the base has a length of the square root of 3 and the height is 1. Area of a triangle =(base times height)/2=(radical 3)/2.  There are 6 smaller triangles total, so multiply the area by 6=total area=3 times radical 3 (5.196)\nHope this helps, it would be a lot easier if I had a picture that I could post and it would make more sense.