Answer:
PI = 3.14
radius = float(input(' Please Enter the radius of a circle: '))
area = PI * radius * radius
circumference = 2 * PI * radius
Explanation:
i srs dont know i am so sorry i forgot but maybe this?

Haptic feedback is used to engage more of the user's senses to provide a deeper and more immersive experience. Products that offer haptic feedback, such as some game controllers, often provide different kinds of sensations to correspond with different visual and audio stimuli.
Explanation:
<h3>Hope it helps you !!</h3>
ANSWER:
1)i. The relationship is a degree of 2 ( i.e Binary). The cardinality of the relationship is One-to-Many.
ii. The model is from piano description to piano manufacturer.
PIANO:
Model name
Model number
Serial number
Manufacturing completion date
MANUFACTURER:
Ebony and Ivory
2)i. The relationship is a degree of 2 ( i.e Binary). The cardinality of the relationship is Many-to-Many.
ii. The model is from piano description to Technician.
PIANO:
Model name
Model number
Serial number
Manufacturing completion date
TECHNICIAN
Employee number
Specialty
3)i. The relationship is a degree of 2 (i.e Binary). The cardinality of the relationship is Many-to-One.
ii. The model is from Technician to Technician
TECHNICIAN:
Lower rank
TECHNICIAN:
Higher rank
It will trip off, removing power from the load.