+0

# Need Help please

0
104
1

The tires on your bicycle have a diameter of 22 inches. How many rotations does each tire make when you travel 800 feet? Round your answer to the nearest whole number.

Guest Feb 16, 2017

#1
+18777
+10

The tires on your bicycle have a diameter of 22 inches.
How many rotations does each tire make when you travel 800 feet?
Round your answer to the nearest whole number.

Let p = perimeter circle
Let d = diameter circle
Let n = number of rotations

perimeter circle:
$$\begin{array}{|rcll|} \hline p &=& d\cdot \pi \quad &| \quad d = 22\ in. \\ p &=& 22\cdot \pi \ in. \\ \hline \end{array}$$

rotations:

$$\begin{array}{|rcll|} \hline n &=& \dfrac{ 800\ feet \cdot \frac{12\ in.}{1\ feet}} {p} \quad &| \quad 1 feet = 12\ inches \\ n &=& \dfrac{800\cdot 12}{22\cdot \pi} \\ n &=& 138.898859426 \text{ rotations } \\ \hline \end{array}$$

Round your answer to the nearest whole number: 139 rotations

heureka  Feb 16, 2017
Sort:

#1
+18777
+10

The tires on your bicycle have a diameter of 22 inches.
How many rotations does each tire make when you travel 800 feet?
Round your answer to the nearest whole number.

Let p = perimeter circle
Let d = diameter circle
Let n = number of rotations

perimeter circle:
$$\begin{array}{|rcll|} \hline p &=& d\cdot \pi \quad &| \quad d = 22\ in. \\ p &=& 22\cdot \pi \ in. \\ \hline \end{array}$$

rotations:

$$\begin{array}{|rcll|} \hline n &=& \dfrac{ 800\ feet \cdot \frac{12\ in.}{1\ feet}} {p} \quad &| \quad 1 feet = 12\ inches \\ n &=& \dfrac{800\cdot 12}{22\cdot \pi} \\ n &=& 138.898859426 \text{ rotations } \\ \hline \end{array}$$

Round your answer to the nearest whole number: 139 rotations

heureka  Feb 16, 2017

### 10 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details