A man whose height is 2.1 m casts a shadow that is 3.2 m in length. What is the approximate height of a building that casts a sh
adow of 11.5 m?
a. 10.4 m
b. 9.6 m
c. 7.5 m
d. 17.5 m
a. 10.4 m
b. 9.6 m
c. 7.5 m
d. 17.5 m
1 answer:
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First we have to find length of 1 side of the square. We can use formula for area of the square. A=a*a ==> 
where a is length of the side.
From this formula we can find
a=
Now we just have to multiply it by 4, because there are 4 sides.
81*4=324 - its the answer
From this formula we can find
a=
Now we just have to multiply it by 4, because there are 4 sides.
81*4=324 - its the answer