Respuesta :

zhekingsquad1

Do Circumfrence over diameter then add pi? I think
a) area: 3^2pi = 9pi cm or 28.27 cm
Perimeter/ circumference: 2*3pi = 6pi cm or 18.85 cm
b) 10/2 = 5 (radius)
area: 5^2pi = 25pi feet or 78.54 feet
Perimeter/circumference: 2*5pi = 10pi feet or 31.42 feet