Answer:
A = 12.56 m²
General Formulas and Concepts:
<u>Pre-Alg</u>
- Order of Operations: BPEMDAS
<u>Geometry</u>
- Area of a Circle: A = πr²
- d = 2r
Step-by-step explanation:
<u>Step 1: Define</u>
d = 4 m
<u>Step 2: Find </u><em><u>r</u></em>
- Substitute:               4 = 2r
- Isolate <em>r</em>:                   2 = r
- Rewrite:                    r = 2 m
<u>Step 3: Find Area</u>
- Substitute:               A = π(2)²
- Substitute:               A = (3.14)(2)²
- Evaluate:                  A = (3.14)(4)
- Multiply:                   A = 12.56 m²
 
        
             
        
        
        
4 units wide........................