Respuesta :
Answer:
5155.07142857
Step-by-step explanation:
diameter/2 = radius
81/2 = radius
40.5 = radius
Area = π r^2
Area = 22/7 *40.5^2
Area = 5155.07142857
Answer:
5155.07142857
Step-by-step explanation:
diameter/2 = radius
81/2 = radius
40.5 = radius
Area = π r^2
Area = 22/7 *40.5^2
Area = 5155.07142857