Answer:
The bike will travel about 75 feet when the wheel makes 15 complete rotation
The wheel will make 8 rotations if Noha rides 40 feet
Explanation:
The distance that a wheel can make in one rotation equal the circumference of the wheel
D = C × n, where
- n is the number of the complete rotation
Let us use this fact to solve the question
∵ The circumference of the wheel C = 5 feet
∵ The wheel makes 15 complete rotation
→ Substitute them in the rule above to find the distance
∵ D = 5 × 15
∴ D = 75 feet
The bike will travel about 75 feet when the wheel makes 15 complete rotation
∵ Noha rides for 40 feet
∴ D = 40
∵ C = 5 feet
→ Substitute them in the rule above to find the number of the rotation
∵ 40 = 5 × n
∴ 40 = 5n
→ Divide both sides by 5 to find n
∴
∴ 8 = n
The wheel will make 8 rotations if Noha rides 40 feet