Kikokotoo cha Duara

Uliyopewa

Nusu kipenyo (r)

Kipenyo (d)

Eneo (A)

Mzunguko (C)

Duara
Nusu kipenyo	r = 12 meters
Kipenyo	d = 24 meters
Mzunguko	C = 24 π meters = 75.4 meters
Eneo	A = 144 π meters² = 452.39 meters²

Kulikuwa na hitilafu katika hesabu yako.