5) A boy who is 3 feet tall can cast a shadow on
the ground that is 7 feet long. How tall is a
man who can cast a shadow that is 14 feet
long?(Solve using proportion)
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Step-by-step explanation:
Let the length of the shadow of the building =x.
In △ABC, AB || DE (both are standing vertically on the ground)
DE
AB
=
EC
BC
6
45
=
8
x
⇒x=
6
45×8
=60 ft
∴ Length of shadow cast by the building is 60 ft.
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