Ms. Marine calculated that her hoop earring has a diameter of 3.5 centimeters. What is the area of her earring (round to the hundredths place)?

Area,

Step-by-step explanation:

We have,

Diameter of earring, d = 3.5 cm

It is required to find the area of her earring. The earring is in the shape of a circle. The area of a circle is given by :

r is radius of circle

or

So, area of her earring is .

560

step-by-step explanation:

giggidy

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