What facts are required in order to conclude that m∠ade = m∠abc?
a) ad = db and ae = ec
b) ab = de and ac = bc
c) de = 2 •(bc), ad = 2 •(ab), and ae = 2 •(ac)
d) the exterior angle of a triangle is equal to the sum of the two remote interior angles.

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

what? that isnt a question

step-by-step explanation:

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!