Answer:
≈ 44 cm²
Step-by-step explanation:
the area (A) of the washer is found using A = πr² ( r is the radius )
A = external area - internal area
external radius = [tex]\frac{15}{2}[/tex] = 7.5 cm
internal radius = [tex]\frac{13}{2}[/tex] = 6.5 cm
A = π ( 7.5² - 6.5² ) = π (56.25 - 42.25 ) = 14π ≈ 44 cm²
