Question

Tolong dong nomor 1-4
Pakai cara

Answer 1

Verified answer

1 ) Panjang sebenarnya
= 4,5 cm ÷ 1/1000
= 4,5 cm × 1000
= 4.500 cm
= 45 m

Lebar sebenarnya
= 2 cm ÷ 1/1000
= 2 cm × 1000
= 2.000 cm
= 20 m

Luas sebenarnya
= 45 m × 20 m
= 900 m2

2 ) Panjang sebenarnya
= 7 cm ÷ 1/20.000
= 7 cm × 20.000
= 140.000 cm
= 1.400 m

Lebar sebenarnya
= 3,5 cm ÷ 1/20.000
= 3,5 cm × 20.000
= 70.000 cm
= 700 m

Luas sebenarnya
= 1.400 m × 700 m
= 980.000 m2

3 ) Panjang sebenarnya
= 4 cm ÷ 1/300.000
= 4 cm × 300.000
= 1200.000 cm
= 12 km

Lebar sebenarnya
= 2 cm ÷ 1/300.000
= 2 cm × 300.000
= 600.000 cm
= 6 km

Luas sebenarnya
= 12 km × 6 km
= 72 km2

4 ) Diameter sebenarnya
= 14 cm ÷ 1/2.200.000
= 14 cm × 2.200.000
= 30.800.000 cm
= 308 km

Jari jari sebenarnya
= 308 km ÷ 2
= 154 km

Luas sebenarnya
= 22/7 × 154 × 154
= 74.536 km2

Answer 2

Mohon maaf klau salah y