In a group of 60 secondary school science teachers. 30 teaches biology, 27 teaches Physics and 21 teaches Chemistry, 12 teaches both Biology and Physics but none teaches both biology and Chemistry. How many teaches Chemistry and Physics and how many teaches only Physics. ​

a

explanation:

answer: procent 54 wynosi 33,33%

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

step-by-step explanation:

i believe its "c" because all of the other options include a but it could be d because there is a way of financing with cash at certain places but its uncommon.