Does anybody know this answer?

circumference=2πr

=2×3.14×8.5

=53.38cm

53.38 cm

Step-by-step explanation:

The formula for finding the circumference of a circle is C = 2πr = πd. Because the problem approximates π = 3.14 all we need to do is multiply 3.14 by 2 and r. It is given that r = 8.5 cm so therefore C is 3.14 x 2 x 8.5 = 53.58 cm.

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.