22nd question please
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given height of object h = 6m, length of the shadow of the object h' = 400 cm = 0.4m
height of the tower H = ? length of the shadow of the tower H' = 28m
as both object and the tower are assumed to be at 90° to the ground and angle of sun casting the image is same, then both form a similar ∆ by AA rule.
therefore ratio of the heights and shadows are proportional.
H/h = H'/h'
=> H/6 = 28/0.4
=> H = 28/0.4 × 6
=> H = 420 m
height of the tower is 420m
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