A pole 6m high has a shadow 10m long when the shadow of a nearby building is 220m long. How tall is the building?
The answer should be to the nearest tenth or as a whole number.
x = m

Question

A pole 6m high has a shadow 10m long when the shadow of a nearby building is	 220m long. How tall is the building?
The answer should be to the nearest tenth or as a whole number.
x = m

anonymous · Answer

ans is 132m

anonymous · Answer

do u need working of this answer????

anonymous · Answer

yes please

anonymous · Answer

I asked becoz u hv posted many similar questions...

See at a certain position/time of sun, the shadows of various things is directly proportional to their height

So this is a question of direct variation/proportion

anonymous · Answer

In case of direct variation

x
-- = constant
y

so  x1      x2
      --  = ---
       y1      y2

anonymous · Answer

So if we represent the height of object by x and length of shadow by y, then

x1 = 6  and  x2 = ?
y1 = 10 and y2 = 220

Using   x1      x2
             --  = ---
             y1      y2   

   6              x2
------ = -------
  10             220

anonymous · Answer

so 6 x 220         x2
     -------  =
         10

6 x 22 = x2

132 = x2

anonymous · Answer

Is it clear now???

anonymous · Answer

yes