0.04166666666666 repeating hope this helps
56
360-248=112
inscribed angle so 112/2=56
1 1/4% = 1.25% = 0.0125
" of " means multiply
x = what number
0.0125x = 1.5
x = 1.5 / 0.0125
x = 120 <===1 1/4% of 120 = 1.5
1" = 2.5'
2.5'(3.75") = 9.375'
3.75" = 9.375'
For every inch is 2.5ft
1 - 2.5 ft
2 - 5 ft
3 - 7.5 ft
.75' - 0.625 ft
7.5' + 0.625' = 9.375"