Earthquake intensity is measured as a base ten log How many

Earthquake intensity is measured as a base ten log. How many times as powerful is an earthquake with R = 7.4 compared to an earthquake with R = 6?

Hint: R is a power of 10.

earthquake intensity is measured by the formula

R = log ( A/ Ao )

times earthquake with R= 7.4 is greater than R = 6

= 10^ ( 7.4 - 6 )

= 10^ 1.4

= 25.12

hence approximately 25 times it is as powerful