The head of a nail is circular, as shown. The head of this nail has a diameter of 10 millimeters. Which measurement is closest to the area of the head of this nail in square millimeters? 15.7 mm2 314 mm2 78.5 mm2 62.8 mm2

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

no

step-by-step explanation:

answer

there would be 162.15 calories in this cereal.

step-by-step explanation: