The average human heart beats 1.15*10^5 times per day. There are 3.65*10^2 days in one year.

Question

How many times does the heart beat in one year?
Write your answer in scientific notation, and round to one decimal place.

Answer 1

To find the total number of beats in one year, we need to multiply the average number of beats per day by the number of days in one year:

(1.15*10^5 beats/day) * (3.65*10^2 days/year) = 4.1975*10^7 beats/year

Rounding to one decimal place, the heart beats 4.2*10^7 times in one year.