Answer:
260,000,000 cm
Step-by-step explanation:
Given that; if two plates diverge at the rate of 1.3 cm/ year
i.e in 1 year, their rate of divergence = 1.3 cm
after 200 million years , their divergence rate will be;
=

= 260,000,000 cm
Therefore, their rate of divergence after 200 million years will be 260,000,000 cm.