12 inches equals 1yd. First to 3yds. would be 36 inches.
http://wiki.answers.com/Q/How_many_inches_equals_1...

There are twelve inches in a foot, and three feet in a yard. The total number of inches in a yard, is thirty six. Measurement sticks are sold as rulers, which are a foot long, or
http://www.ask.com/webanswers/Reference/Other/how...

One yard is equal to 36 inches. Therefore, 1 yard 5 inches is equal to 36 + 5 = 41 inches.
http://wiki.answers.com/Q/How_many_inches_are_ther...

There are 36 inches in one yard. Therefore, 2.1 yards is equal to 2.1 x 36 = 75.6 inches.
http://wiki.answers.com/Q/How_many_inches_are_ther...
