The horse racing record for a 1.50 mi track is shared by two horses. fiddle isle, who ran the race in 143 s on march 21, 1970, and john henry, who ran the same distance in an equal time on march 16, 1980. what were the horses' average speeds in: a. mi/s

we know that

the average speed is equal to

in this problem we have

substitute the values in the formula

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: