31% thirty one percent 30.7°thirty point seven degrees0.631 nought point six three one +312 plus three and a half-514 minus five and a quarter 1xone over xy2 y squared k3 k cubed3a4 three a to the foura5茁2 alpha to th 31% thirty one percent 30.7°thirty point seven degrees0.631 nought point six three one +312 plus three and a half-514 minus five and a quarter 1xone over xy2 y squared k3 k cubed3a4 three a to the foura5茁2 alpha to th