tolong ya pake cra pilisss no 4-7

4. a. 13^3 - 11^3 - 2^3 = 2197 - 1331 - 8
= 858
b. 4 + 9 - 11 / 5 × 8
= 2 / 40
= 1 / 20

5. Lahan = 2 ha = 20,000m^2 ( 1 ha = 1 h^2 = 10,000m^2 )

Kolam = 25 are = 2500m^2 ( 1 are = 1 dm^2 = 100m^2 )
Rumah = 1500m^2
Kebun = 50dam^2 = 5000m^2

Lahan sisa = 20,000 - (2500 + 1500 + 5000)
= 20,000 - 9000
= 11,000m^2 (1,1 ha)

7. Luas persegi = panjang × lebar
= 18 × 12
= 216

Luas segitiga = a × t : 2
= 12 × (18 - 12) : 2
= 12 × 6 : 2
= 36

Luas daerah arsiran = Luas persegi - Luas segitiga
= 216 - 36
= 180cm^2

Mohon maaf, nomor 6 aku nggak tau cara no.6, semoga dapat membantu:)