Harry‌ ‌takes‌ ‌4‌ ‌round‌ ‌of‌ ‌a‌ ‌circular‌ ‌path‌ ‌of‌ ‌radius‌ ‌70‌ ‌m‌ ‌daily.‌ ‌How‌ ‌many‌ ‌kilometres‌ ‌he‌ ‌walks‌ ‌daily?‌

Options

A. 1 km
B. 1.5 km
C. 1.76 km
D. 1.95 km

Answer

To solve the problem of how many kilometers Harry walks daily, we will follow these steps:

### Step 1: Calculate the Circumference of the Circular Path
The formula for the circumference \( C \) of a circle is given by:
\[ C = 2 \pi r \]
where \( r \) is the radius of the circle.

Given that the radius \( r = 70 \) meters, we can substitute this value into the formula:
\[ C = 2 \times \pi \times 70 \]

### Step 2: Substitute the Value of \( \pi \)
For our calculations, we can use \( \pi \approx \frac{22}{7} \). Thus, we substitute:
\[ C = 2 \times \frac{22}{7} \times 70 \]

### Step 3: Perform the Multiplication
Calculating the above expression:
\[ C = 2 \times \frac{22 \times 70}{7} \]
\[ C = 2 \times \frac{1540}{7} \]
\[ C = 2 \times 220 = 440 \text{ meters} \]

### Step 4: Calculate the Total Distance for 4 Rounds
Since Harry takes 4 rounds of the circular path, we multiply the circumference by 4:
\[ \text{Total Distance} = 4 \times C = 4 \times 440 \]
\[ \text{Total Distance} = 1760 \text{ meters} \]

### Step 5: Convert Meters to Kilometers
To convert meters to kilometers, we divide by 1000:
\[ \text{Distance in kilometers} = \frac{1760}{1000} = 1.76 \text{ kilometers} \]

### Final Answer
Harry walks **1.76 kilometers** daily.

---