Math Problem Statement

Hawa has a bicycle with a wheel radius of 0.35 m. She rides for 800 meters. Find how many full turns the wheel needs to make to cover the whole distance.

Solution

To solve this problem, we need to determine how many full turns the bicycle's wheel makes to cover a distance of 800 meters.

Steps:

  1. Calculate the circumference of the wheel: The circumference CC of a circle is given by the formula: C=2πrC = 2\pi r where rr is the radius of the wheel and π3.1416\pi \approx 3.1416.

    Given: r=0.35metersr = 0.35 \, \text{meters} Substituting into the formula: C=2×3.1416×0.35C = 2 \times 3.1416 \times 0.35

  2. Determine the number of turns: To find how many full turns the wheel makes, divide the total distance traveled by the circumference of the wheel: Number of turns=DistanceCircumference=800C\text{Number of turns} = \frac{\text{Distance}}{\text{Circumference}} = \frac{800}{C}

Let me calculate this for you.The wheel will need to make approximately 363.78 full turns to cover a distance of 800 meters.

Would you like more details or further clarifications?

Here are some related questions you might find interesting:

  1. What if the radius of the wheel was 0.5 meters? How many turns would it take?
  2. How would the answer change if the distance traveled was 1 kilometer instead?
  3. What is the relationship between wheel radius and the number of turns for a given distance?
  4. How many turns would it take to cover 1 mile if the radius remained 0.35 meters?
  5. How can the distance per wheel rotation be maximized?

Tip: The circumference of a circle increases linearly with the radius, so a larger wheel will cover more distance per rotation.

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Math Problem Analysis

Mathematical Concepts

Geometry
Circles

Formulas

Circumference of a circle: C = 2πr

Theorems

Circumference of a Circle

Suitable Grade Level

Grades 6-8