Jawaban:

1. Luas = 616 cm²

Keliling = 88 cm

2. Volume = 1540 cm³

3. Volume = 64 cm³

4. 625.000

5. 5020 m

Penjelasan dengan langkah-langkah:

Nomor 1

Jari-jari lingkaran = 14 cm

Luas = πr² = 22/7 × 14 × 14 = 22 × 2 × 14 = 616 cm²

Keliling = 2πr = 2 × 22/7 × 14 = 2 × 22 × 2 = 88 cm

Nomor 2

Tinggi tabung = 10 cm , jari-jari tabung = 7 cm

Volume = πr²t = 22/7 × 7 × 7 × 10 = 22 × 7 × 10 = 1540 cm³

Nomor 3

Panjang = 8 cm , lebar = 4 cm , tinggi = 2 cm

Volume = plt = 8 × 4 × 2 = 64 cm³

Nomor 4

25% × 2500000 = 25/100 × 2500000 = 625000

Nomor 5

5 km + 2 dam = ? m

5 × 1000 + 2 × 10

5000 m + 20 m

5020 m