A training field is formed by joining a rectangle and two semicircles, as shown below. The rectangle is 100 m long and 75 m wide. What is the length of a training track running around the field? (Use the value 3.14 for n, and do not round your answer. Be sure to include the correct unit in your answer.)

the answer is a

step-by-step explanation:

so, converting firstly the mixed fractions to improper fractions and then "adding".

the first option is the answer.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft