Answer:
66.26 kg
Step-by-step explanation:
weight = mass x g ; where g = acceleration due to gravity = 9.81 m/s²
mass = weight ÷ g
given, weight = 650 N
mass = 650 / 9.81 = 66.26 kg
B should be the only correct answer.
20
multiply 4 by 5 to get 20
or add 4+4+4+4+4=20