78.5 inches, the area equation for a circle is pi times radius squared so to find it you would take 3.14*5^2 (radius is half the diameter) so it would be 3.14*25 which equals 78.5
The answer is going to be H because if you plug in x from the table it will give you y.
They are similar. I don't remember what it is called but it is 100% ALWAYS true that the angles of a triangle must add up to 180 degrees. Always. If you have two angles, that are 60 degrees, the other must always be 60. again, always. So, They are similar by their angles.
This is easy, hint, you multiply ;-;
Hello,
26r^3s+52r^5-39r²s^4
=13r²(4r^3+2rs-3s^4)
