12in = 1ft.
12x5=60in + 4in =64in total
64in x 2.54 cm = 162.56 cm
Convert feet to inches and then add your inches together. Next multiply your inches by centimeters in each inch. That's your answer.
Left) 4×pi-2×pi/3=10×pi/3 (rad)
720-120=600⁰
Right) 2×pi (rad)
360⁰
1/5 because you can't have 0/5
You would use the distributive property.