4.15 can be rounded off to 4.2 to one decimal place
It is: 42 rounded to the nearest whole number
It is 42, exactly as in the question.
42
40
42
42.
42
1.8261
Their least common multiple is 42.
cos (42 degrees) = 0.74314 (rounded) cos (42 radians) = -0.4 (rounded) cos (42 grads) = 0.79015 (rounded)
259/42 = 6.2 so the least whole number is 7.
168