11 / 12 - 8 / 12 = 3 / 12 = 1/4 square meters;
Answer:
Is the answer, if you want it simplified then, 
Step-by-step explanation:
Answer:
114.24°
Step-by-step explanation:
7(15)+6= 105
3(15)= 45, now we plug it in the formula, 

so now we square root it
= 114.24
Answer:
Last Option

Step-by-step explanation:
We have the Venn diagram that shows the probabilities of occurrence of 3 events A, B and C
In this case, since events A and B and B and C are non-disjoint events, then the probability of occurrence B is the sum of the probability that only B will occur plus the probability of occuring A and B plus the probability that B and C occur
This is:

.