Why is 1/8 cup equal to 1 fluid ounce

because there are 8 fluid ounces in a cup

Step-by-step explanation:

1/8 of cup = 0.125 cup = 1 fluid ounce

2/8 of cup = 0.25 cup = 2 fluid ounce

3/8 of cup = 0.375 cup = 3 fluid ounce

4/8 of cup = 0.5 cup = 4 fluid ounce

5/8 of cup = 0.625 cup = 5 fluid ounce

6/8 of cup = 0.75 cup = 6 fluid ounce

7/8 of cup = 0.875 cup = 7 fluid ounce

8/8 of cup = 1 cup = 8 fluid ounce

hope i helped