Answer:
19)
[tex]\text{Exact: } 4\sqrt{2} \text{ km}\\\text{Approximate: } 5.66 \text{ km}[/tex]
20)
[tex]\text{Exact: } 17\sqrt{2} \text{ mi}\\\text{Approximate: } 24.04 \text{ mi}[/tex]
21)
[tex]\text{Exact: } 12\sqrt{2} \text{ ft}\\\text{Approximate: } 16.97 \text{ ft}[/tex]
22)
[tex]\text{Exact: } 5\sqrt{2} \text{ cm}\\\text{Approximate: } 7.07 \text{ cm}[/tex]
Step-by-step explanation:
Diagonal of a square can be calculated as:
[tex]\text{diagonal} = \text{side} \times \sqrt{2}[/tex]
19)
[tex]\text{diagonal} = 4 \times \sqrt{2} \text{ km} \approx 5.66 \text{ km}\\\\\text{Exact: } 4\sqrt{2} \text{ km}\\\text{Approximate: } 5.66 \text{ km}[/tex]
For exact solution keep it in the radical form and for approximate solution use calculator and round.
