bantu no 1 ama 2 gc ga pake lama

1. Js = 288 km = 28.800.000 cm

Jp = 3,2 cm

S = 3,2 : 28.800.000

= 1 : 9.000.000 (D)


2. Lp = phi × r^2

= 3,14 × 2^2

= 3,14 × 4

= 12,56

S = 1 : 200

Ls = Lp × S

= 12,56 × 200

= 2.512 cm^2

= 25,12 m^2 (C)