Contoh mencari keliling diameter 5 m

d = 5

Keliling = phi × d
            = 3.14 × 5 = 15.7 m

semoga membantu

rumus keliling lingkaran = [tex] \pi [/tex] x diameter
diameter = 5cm
[tex] \pi [/tex] = 3.14
keliling = 3.14 x 5 cm
            = 15.7 cm