Look at the last number in the decimal.
12.66
12.63
Compare 6 and 3. 6 is larger so therefore 12.6666666 is larger. (You also need to compare the tenths place too, but these happen to have the same tenths place, .6.
Answer:
3x +45°=180° (due to straight angle)
or, 3x= 180°-45°
or,3x= 135°
or,X=135°/3
X =45°.ans
6(173.04) + 3.15 + 3(29) =
1038.24 + 3.15 + 87. = 1128.39