I believe A and B are the ones. As for explaining? hmm. I would honestly say that any number to the right of a number is a tenth of the place above it. But then again, it's optional to explain ;P
Answer:
hiii...hopefully this is correct x=12
Negative Exponent Rule:
this says that negative exponents in the numerator get moved to the denominator and become positive exponents. Negative exponents in the denominator get moved to the numerator and become positive exponents.
Like this||
Cot x = cos x / sin x = 0.85 / 0.52 = 1.6346
Lateral area is the area of the faces, while surface area is the area of the faces and and bases.