Q: How many grooves are on a twelve inch record?

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88

One inch

a quarter has 130 grooves.

150 grooves

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twelve

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One.

ONE continuous groove! An interesting side note, as an advertising gimmick in the 60's, a record was produced with two sets of grooves. The placement of the needle at the beginning of the record determined the content of the Play.

Not too much of a count. As with any record, there is only one CONTINUOUS groove on one side of a record. Since there are 2 sides to a record the answer is 2 GROOVES, 1 groove for each side.

88

There were thirty-three grooves on one side of a standard 78 rpm record The seventy-eight rpm records were released in the early 1800s and were very popular at that time.

twelve

One inch

113.04 if the diameter is twelve inches

One. Starts at the edge, finishes in the middle.

One fat quarter yields twelve 5 inch squares