It is: 7.5*sin(30) = 3.75 meters
No, because 8 isn't a factor of 30.
90
A right triangle. All the angles of a triangle add up to 180. 30+60+x=180. subtract 30 from both sides, then 60 from both sides and x=90
isosceles triangle
There are many theories and formulas that can be applied to find the length of each of the sides of a triangle. The most common is the Pythagorean Theorem: a2+b2= c2 . The letters: "a , c" are the two legs. The hypotenuse is the letter "c". For a 30-60-90 triangle you can use a special formula, as well as a 45-45-90 triangle.
If the ratio of the three sides are 1:√(3):2, it's a 30-60-90 triangle
No because it does not comply with Pythagoras' theorem.
Let the two sides of the right-angled triangle be a and b. Given that the perimeter is 30 cm, we have a + b + 13 = 30. Since the triangle is right-angled, we can use the Pythagorean theorem: a^2 + b^2 = 13^2. We now have a system of two equations that can be solved simultaneously to find the values of a and b.
Zero. The two shorter sides together make 70 metres, so they lie flat against the longest side. Really, there is no triangle. If the 3 sides actually make a triangle, you can use Heron's formula - look it up - to find the area.
No. But they can be the lengths (not leangths!) of the three sides.
The fact that it has a 30 perimeter tells you nothing about the triangle's angles and very little about the lengths of its sides. The name, if it has any, is indeterminate.