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geometry hwork help please!! the shade lampost prob?
shad is 3 ft. from a lamp post that is 12 ft. high. shad is 5.5 ft. tall. how long is shad's shadow?
We have similar triangles here.
We make a prorportion and solve for x.
Let x = the length of the shade's shadow.
12/5.5 = 3/x
We cross-multiply.
5.5 times 3 = 12 times x
16.5 = 12x
Divide each side by 12 to find x.
16.5/12 = x
1.375 = x
We can round this off to the nearest tenths and get
x = 1.4 feet as the length of the shade's shadow.
Leaning on a Lamp Post