Find the circumference.
Use 3.14 for it.
()
r = 4 cm
C = [?] cm
C=Td

C=2 π r = 2 π 4

C≈  25.13274

Just tell me if you need to round it off

Hope this helps :)

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol