Question

Mount St. Helens a volcano, erupted on May 18 1980. Before the eruption, Mount St. Helens was 2,950 meters high. After the eruption, it was 2,550 meters high.

- What is the difference in height of Mount St. Helens before and after the eruption in meters?

- Before the eruption how many kilometers high was Mount St. Helens

Answer 1

to find out you just need to do:
2950-2550=400m
before the eruption Mount StHelens was 2.95 km