50.27yd²
Using the formulasA<span>=</span><span>π</span><span>rto the second power</span>d<span>=</span><span>2</span><span>r</span>Solving forAA=14πd2=14·π·82≈50.26548yd²
Answer:
addition property of equality
Step-by-step explanation:
This is because the addition property of equality means
if
then 
So if,
then 
Complementary angles add up to 90°
and supplementary angles add up to 180°
Add the two angles together
82+98=180
So the measure of these two angles are supplementary