All sides are equal in an equilateral triangle and the perpendicular bisects the side too.
so BC will be bisected and the segments be 5 each.
you can use Pythagoras theorem to find the altitude length, hypotenuse will be one side of the triangle.
$h^2=100-25=75$
$h=\sqrt{75}=5\sqrt3$
Answer:
Option D. 
Step-by-step explanation:
we know that
The volume of the cylinder is equal to
In this problem we have
substitute
-----> exact value of the volume
The Answer to this problem is (the line y=x). I'm positive that this is the right answer!!!
Answer:
90 feet
Step-by-step explanation:
320 (1/8) = 40
3/4 (40) = 30 yards
1 yard = 3 feet
30 (3) = 90 feet
2+2=4
a^2+b^2=c^2
15^2-4^2
=225-16
=209
