If angle hfg is complementary to angle acd, then?

I can help, but do you have an image I can see?

If you had an image then I would be able to give yoy an exact answer but your question means that:

Angle HFG + angle ACD = 90°
So to find either angle, you would need to subtract one of the angles above from 90°

so yeah complementary angles are basically angles that has a sum of 90°

Hello!

the answer is:

the correct option is the option b.

why?

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!

None of those are technically correct. 9.7 x 104 is actually 1,008.8, but if that answer was a choice, it would be that one. if you meant 9.7 times maybe a thousand or more or divided by 10 or more, than the answer choices would be correct, but other than that, they actually arent.