Answer:
14 cm
Step-by-step explanation:
The applicable formula is ...
s = rθ
s = (7 cm)(2) = 14 cm
f(2)= -2×2×2+ 6×2 -7
=-8+12-7
=-3
B
3rd option
the ratio of b : c is the cos77° , that is
cos77° = = ≈ 0.224951054.