The cylinder part of every tank is exactly 10 feet long, but the radius of the hemispheres, r , will be different depending on the size of the tank. the company want to double the capacity of their standard tank, which is 6 feet in diameter.

answer;

the correct answer

just use google you beautiful person.

have a nice day < 3

i think it might be a but you might want a second opinion

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)