SA = 21tr2 + 2rh (Use 3.14 for T.)
12 in.
40 in.
Find the surface area.
square inches
Do not round your answer

why can't you?

step-by-step explanation:

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.