Question

) A 5 60 high vertical pole casts a shadow 3 20 long. Find at the same time
i) The length of the shadow cast by another pole 10 50 high
ii) The height of the pole which casts shadow 5 long.
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Answer 1

Answer:

Explanation:

pole height -           5.6      10.5      x

shadow length -     3.2         x        5

direct proportion

x/y = constant

i)5.6/3.2 = 10.5/x

2.1/1.6 = 10.5/x

x = 10.5 x 1.6

           2.1

= 5 x 1.6 = 8

8 metres long shadow would be casted

ii) 2.1/1.6 = x/5

x = 2.1 x 5

         1.6

x = 6.56

6.56 metres long pole casts a shadow 5 metres long