Find the area and perimeter or circumference of each figure:

a. Circle with radius 3 cm.

b. Circle with diameter 10 feet.

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