Question

With the help of the given information, find the height of the red bar.

Answer 1

Similar triangles >>> 2/3=4/a >>>> a=6 m.
similar triangles >>> 2/3=X/12 >>> X=8 m.
The height of the red bar is 8 m.

Answer 2

The shadow on the wall would itself cast a shadow which is 6 m long if the wall wasn’t present there.

So if the wall was missing the total length of the shadow cast by the red bar would be 6 m + 6 m = 12 m.

So if a 2 m bar cast a 3 m shadow,

Then a 12 m shadow is cast by;
(12 x 2)/3 = 24/3 = 8 m

Height of Red bar = 8 m.