Answer:
The second one
Step-by-step explanation:
Its not the third one because it is an equilateral
its not the first one because it is not obtuse
The triangle is isosceles
obtuse means the angles are big
the angles are small so they are acute
I hope this helps you
Answer:
9
b³
Step-by-step explanation:
The 2 terms are like terms and can be combined, that is
b³ ( 1 + 8)
= 9b³
Equilateral triangle is a triangle with the 3 sides of the same length, and the 3 angles with the same measures/degree.
The formula to find the area of a triangle is base x height/2 , you do have the base (40), but you need the height. To find the height of an equilateral triangle you use the formula: side/2 x radical3, this way u'll find the height and therefor can calculate the area of the triangle.
Hope that helped :)
