A rectangle piece of mental is 10 inches kilometers and an area of 63 square kilometers. a. What is the perimeter?
b. What is the area?

area=l*w

63=10*l

6.3=l

length=6.3

width=10

a.perimeter=2{l+W]

perimeter=2{6.3+10}

perimeter=32.6inches

b.Area=L*W

Area=6.3*10

Area=63km²

Step-by-step explanation:

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step-by-step explanation:

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