Answer:
The strength of gravity on Venus is 8.91m/s².
Step-by-step explanation:
The strength of gravity on a planet is given by the following formula:
g = w/m
In which w is the weight, in newtons, and m is the mass, in kg.
In this problem, we have that:
Textbook weighs 19.6 newtons on Venus.
This means that

mass of 2.2 kg
So m = 2.2
What is the strength of gravity on that planet?
g = w/m = 19.6/2.2 = 8.91
The strength of gravity on Venus is 8.91m/s².