The formula for the circumference is 2πr.
The diameter d is given, which is 2 times the radius r (d = 2r)
So you have to calculate π d = 3.142×1.8 ≈ 5.7
0 = 0
The input is an identity: it is true for all values
Answer:
78
Step-by-step explanation:
the product of 6 and 13 =78
Answer:

Step-by-step explanation:
Let x = unknown number


Multiply both sides by 9:

Expand brackets:

Add 32 to both sides:

Divide both sides by 8:
