please help me in my geometry; it's a word problem... thanks,,, please explain what will I do...?

Question

A flagpole casts a 20 m shadow while a 1.5 m person casts a shadow that is 1.2 m long. How tall is the flagpole?

Answer 1

Proportion Problem

multiply the means and the extremes

20/1.2 = x/1.5

The means 1.2x

The extremes 20(1.5)

1.2x = 10(1.5)

1.2x = 30

1.2x / 1.2 = 30 / 1.2

x = 30/1.2

x = 25

Ths flag pole is 25 m tall

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Answer 2

you have to set up a proportion. so put the 1.5 m person over the 1.2 m long shadow. then on the other side of the equal sign, put the 20 m shadow on the bottom. then cross multiply and find ur answer.

it should look something like thiis::


1.5/1.2= x/20

Answer 3

Have you learned about proportions? Well, assuming that the shadows are happening at the same time of day, the ratio should be the same.
Let F=height of flagpole
F 1.5m
____ = ______
20m 1.2m


F= 30
____
1.2m
F=25m

Answer 4

25 m

Answer 5

the top may well be approximately 30.31088 ft. the reason: This triangle is a ideal perspective because of the fact the development is perpendicular to the floor. meaning the angles degree 60, ninety, and subsequently 30, levels. this ability that there is a 30-60-ninety ideal Triangle, which holds specific residences, like the smallest area (the single opposite the 30 degree perspective) is 0.5 the hypotenuse (it is 35 ft), and the different area (it is opposite the 60 degree perspective) is the size of the smallest area circumstances the sq. root of three, so the smallest area may well be 17.5 right here, and 17.5 circumstances the sq. root of three is 30.31088. i wish that facilitates in any way.

Answer 6

This is actually a problem in ratios.
You can write it out as x/20 = 1.5/1.2
Cross multiply .. 1.2x = 1.5 * 20 or 30, so 1.2x = 30
30 / 1.5 = 25 meters.

Answer 7

1.5 m is to 1.2 m (1.5m over 1.2m)shadow length as 20m (20m over X)is to X . Such that:
(1.5m over 1.2m)=20m (20m over X)
Then Cross multiply through the (=)sign and solve for X

Answer 8

Set up a proportion:

F/20 = 1.5/1.2

1.2 F = 30

F = 25 m

Answer 9

if 1.5m of person = 1.2m long....how about
20m = x
1.5/20=1.2/x
cross multiply
1.5x(x)=20x1.2
1.5x=24
x=24/1.5
x=16m