11 is 44% of 25 because 25 divided by 11 is 0.44
Area is all the space that is taken up by a two dimensional object. (the inside)
Perimeter is the distance around a two dimensional object. (the outside)
A=pi(r)^2
So A= 3.14(13)^2
A=530.66
<span>Angle 7 and 5 are vertical angles, so they're equal.
Angles 7 and 8 are supplementary, so they have to add up to 180.
2x + 15 + 3x = 180
Solve for x, then plug it into the expression for angle 7 to get you answer</span>