Answer :
Step-by-step explanation:
A ≈12.57in²
d = Diameter
Using the formulas
A=πr2
d=2r
Solving forA
A=1/4πd²=1/4·π·4²≈12.56637in²
Answer:
A = 4π in²
Step-by-step explanation:
The area (A) of a circle is calculated as
A = πr² ( r is the radius )
Here d = 4, then r = 4 ÷ 2 = 2
A = π × 2² = 4π in²