187.10
For an equilateral triangle with side length a, area = (a²√3)/4, which for a= 6cm is 15.6 cm² [rounded to 1 decimal place]
187.10
Find the area of an equilateral triangle that has a perimeter of 21 inches. Round the answer to one decimal place.
the answer is 32
21.2 sq inches.
It's impossible to have an area in cubic units.
To find the area of an equilateral triangle, you can use the formula: area = (sqrt(3)/4) * s^2 where s is the length of one side of the triangle. If the length of one side of the triangle is 6 cm, the area of the triangle is: area = (sqrt(3)/4) * 6^2 = (sqrt(3)/4) * 36 = (3.46/4) * 36 = 13.83 * 36 = 498.68 Rounded to one decimal place, the area of the triangle is approximately 499 cm^2.
34.2497 rounded to 1 decimal place equals ... 34.2! I think ^.^
First find the perpendicular height (h) of the triangle using Pythagoras.h = sqrt (102 - 52) = sqrt 75 = 8.660254038...Now, area of a triangle = 1/2 base x height.So: area = 1/2 x 10 x 8.660254038 = 43.3 (1 decimal place.)
an Equilateral triangle IS an ACUTE triangle. , because all three angles are less then 90 degrees. Being equilateral , all three angles are 60 degrees. To draw an Equilateral Triangle, you need a ruler , pencil and compass. #1 ; draw a straight line , say 6 inches ( 15 cm). #2 ; Open the compass pointers to the same distancei. (6 ins. ( 15 cm) #3 ; placing the compass point on one ends of the straight line, and draw an arc. (curve). #4 ; Keeping the compass point open to the same distance, place the point on the other end of the straight line, and draw another arc, so that the two arcs cross. #5 ; with the ruler draw a straight line from one end of the base straight line to where the arcs cross. #6 ; from the other end of the same base line, draw another straight line from that point to where the arcs cros.. #7 ; if done correctly, you should see an equilateral triangle.
7.2
Each angle in an equilateral triangle is 60 degrees. In order to create a regular tessellation of an area, we need for the angles of the polygons we are putting near each other to sum to 360 degrees. If you place six equilateral triangles so that all of them share a vertex, and each triangle is adjacent to two others, you get 60*6 = 360 degrees in that vertex. Please see related link for a demo of a triangular tessellation.