How many of following represents a position inwhich would need to find the "surface area"?

Drawing on a toy box
Filling up a huge well
Polishing a vehicle
Wrapping a gift
Putting a fence around an automobile

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

answer: 12   they all have at least 28 days

step-by-step explanation: haha

d. all of the above

step-by-step explanation: