Question

:Dtolong jawab yah^_^

Answer 1

No. 5
a. L = phi × r2
70650 m2 = phi × r2
70650 m2 = 3,14 × r2

r2 = 70650 m2 ÷ 3,14
r2 = 22500 m
r = akar pangkat dua dari 22500
r = 150 m d = 300 m
b. Keliling = phi × d
3,14 × 300 m = 942 m
c. banyak pohon = 942 m ÷ 6 m = 157 +1 = 158 pohon.