Answer:
Step-by-step explanation: cheese
Answer:
around 254.47
Step-by-step explanation:
pi*r^2 is the equation. the radius is 9 so in the equation the r^2 is equal to 81 since 9*9 =81. 81*pi is equal to 254.47
Im not so sure about Q2 but 3 and 4 are correct for sure.
Answer:
m∠ACD = 24°
Step-by-step explanation:
Measure of the interior angles of a polygon = 
Therefore, measure of the interior angles of a rectangle = 
=
= 90°
m∠BCD = 90°
Since, m∠BCD = m∠BCA + m∠ACD
90° = 66° + m∠ACD
m∠ACD = 90° - 66°
= 24°
Therefore, measure of angles ACD is 24°.