1) Could
2) Could, <span>but don't have to be</span>
Just substitue 
for 
in the expression.
Nice
area=pir^2
the areas are
pir^2+pi(2r)^2
they add to 8pi
8pi=pir^2+pi(2r)^2
undistribute pi
8pi=pi(r^2+(2r)^2)
divide both sides by pi
8=r^2+(2r)^2
expand
8=r^2+4r^2
add
8=5r^2
divide by 5
8/5=r^2
sqrt both sides
√(8/5)=r
double since it is double
2√(8/5) is radius of bigger aka (4√10)/5
radius=(4√10)/5
<span>The point of concurrency of the three medians of a triangle is called the orthocenter of the triangle.</span>
First off both triangles form a 90° angle there both congruent. you can tell they form a 90° angle because of square box
