Tolong kerjain nanti di kumpulkan jam 15.00
Jawaban:
1. 15 × 15 artinya 15² = 225
2. 20 × 20 artinya 20² = 400
3. 16 artinya 4 × 4 = 16
4. 100 artinya 10 × 10 = 100
5. √49 = 7 karena 7 × 7 = 49
6. √100 = 10 karena 10 × 10 = 100
7. Keliling = 4 × 13 = 52
Luas = 13 × 13 = 169
8. Keliling = 4 × 23 = 92
Luas = 23 × 23 = 529
Jawaban :
1. 15² = 225
2. 20² = 400
3. 4 × 4 = 16
4. 9 × 9 = 81
5. 7, karena 7 × 7 = 49
6. 10, karena 10 × 10 = 100
7. keliling
= 4 × sisi
= 4 × 13
= 52 cm
luas
= sisi × sisi
= 13 × 13
= 169 cm²
8. keliling
= 4 × sisi
= 4 × 23
= 92 cm
luas
= sisi × sisi
= 23 × 23
= 529 cm²
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