A ladder is 2.5m long and it casts a shadbw 2 m. long. It is placed along a wall The wall casts a shadow 8m . The height of the wall is _______
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Step-by-step explanation:
2 m is 2/2.5×100% of 2.5 m
i.e. 80%
therefore, shadow for the given light source is 80% height of object.
to find the length of wall
20% is 20/100×8 of 8m
1.6 m
height of wall = shadow (80%)+20%
= 8+1.6
height of wall = 9.6m
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