What is the surface area of this figure?

Estimate the product. round the first factor to the nearest whole number, round the second factor to the nearest ten, and then multiply. 3 8/9 × 96

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.