Answer:
There are 13,782.47 feet in 4.2 kilometers ⇒ answer A
Explanation:
- Cilia cycles 4.2 km every morning
- We need to convert the kilometers to feet
- 1 mile = 1.609 kilometers
- 1 mile = 5,280 feet
* Lets do that
∵ 1 mile = 1.609 km
∵ 1 mile = 5,280 feet
- Equate them
∴ 1.609 km = 5, 280 miles
* Now we can use the cross multiplication to find how many feet in
4.2 kilometers
→ km : feet
→ 1.609 : 5,280
→ 4.2 : x
- By using cross multiplication
∴ 1.609 x = 4.2 × 5,280
- Multiply 4.2 by 5,280
∴ 1.609 x = 22176
- Divide both sides by 1.609
∴ x = 13782.47
∵ x represents the number of feet in 4.2 kilometers
∴ There are 13,782.47 feet in 4.2 kilometers