yang bisa gw doain jd guru....

20 : 2 = 10
48 : 2 = 24

s² = 10² + 24²
s² = 100 + 576
s² = 676
s = √676
s = 26m

k = 4 x s
k = 4 x 26
k = 104m

banyak pohon
= 104 : 2
= 52 pohon

harga seluruh pohon
= 52 x 40.000
= Rp 2.080.000,-

Sisi belah ketupat = √10² + 24²
=> √1352
Sisi => 26 meter

Keliling = 4s => 4×26 = 104m

banyak pohon = 104/2 => 52 pohon

Biaya = 52 × Rp 40.000 => Rp Rp 2.080.000 ( B )