Answer: 60°, 72°, 90°, 120° and 180°
Step-by-step explanation:
To calculate the angle of rotational symmetry of a shape or polygon, you make use of this formula

example for a Square with 4 sides. the angle of rotational symmetry is 360/4 =90°.
Answer:
15
Step-by-step explanation:
Use the Pytago theorem.
AB^2=AC^2+BC^2
AB^2= 9^2 + 12^2
= 225
AB = 
= 15
Answer:
Radius = 7.21 feet.
Height = 21.63 feet
- to the nearest hundredth.
Step-by-step explanation:
Let the radius be r feet, then the height will be 3r feet.
So the volume = 1,178.1 = 1/3 π r^2 h
1.178.1 = 1/3 π r^2 3r
1/3 π 3 r^3 = 1178.1
π r^3 = 1178.1
r^3 = 1178.1/ π
r^3 = 375
r = 7.211 feet.
So the height = 3 * 7.211 ft
= 21.633 ft
Answer:
Answer in screenshot
Step-by-step explanation:
36-18=18
ANSWER : C
good luck :)))