Minta jawaban no 25 & 26 !!! pake caraa……..

L = 168°/360° x π x r x r
L = 168°/360° x 3,14 x 20 x 20
L = 168°/360° x 3,14 x 400
L = 42/90 x 1256
L = 14/30 x 1256
L = 7/15 x 1256
L = 586,133333 cm^ 2
–> bulatkan 586 cm^2