If we draw a perpendicular line from one of the vertices of the triangle we get 2 right angled triangles each with altitude 9 ins and vertex angle = 30 degrees. So:-
cos 30 = 9 /h where h = one of the sides of the equilateral triangle
h = 9 / cos 30 = 10.392 inches
Therefore the perimeter of the triangle = 3 * 10.392 = 31.1769 ins
Answer is 31.18 inches to the nearest hundredth.
81 to the 4th root is 3 and 3 cubed is 27.
Answer:
the last one
Step-by-step explanation:
Your answer would be 12.
She can use 12 connecting cubes to make the model in only two ways.
