Thursday
November 27, 2014

Homework Help: Math

Posted by Amey on Thursday, October 5, 2006 at 6:14pm.

It takes ten identical pices to form a circular track for a pair of toy racing cars. If the inside arc of each pair is 3.4 inches shorter than the outside arc, what is the width of the track?

any help would be greatly appreciated.


If you know that the circumference is C=2pi*r where r is the radius, then the total difference between the inside and outside radii is 10*3.4=34in. This means 2pi*r+34=2pi*R where r and R are the inner and outer radii respectively. Note that R-r is the track width.
Thus 34=2pi*R-2pi*r= 2pi(R-r) so
34/(2*pi) = R-r = track width

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Pre Calculus - There are ten equal parts to a circular track for 2 toy cars and ...
Math - Mr. Logan purchased $390 in clothing (excluding sales tax). He bought 5 ...
physics - A skateboard track has the form of a circular arc with a 3.20 m radius...
math - A mechanical toy on a circular track goes forward 3 in. and then backward...
math - A mechanical toy on a circular track goes forward 3in. and then backwards...
math - A mechanical toy on a circular track goes forward 3in. and then backwards...
math - a sock drawer has 2 blue pair,4 white pair,4 black pair? what is the ...
Math - There are 22 gloves in a drawer. 5 brown pair, 4 green pair, and 2 blue ...
math - a sock drawer has 2 blue pair, 4 white pairs, 4 black pair. what is the ...
College Physics - The Daytona 500 stock car race is held on a circular track ...

Search
Members