A 5m 60cm high vertical pole casts a shadow 3m 20cm long. Find at the same time (ii) the height of the pole which cast the shadow of 5m long.
A 5m 60cm high vertical pole casts a shadow 3m 20cm long. Find at the same time (ii) the height of the pole which cast the shadow of 5m long.
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Step-by-step explanation:
Direct proportion
vertical pole = 5m 60cm = 560cm , other pole = ?
first shadow = 3m 20cm = 320cm
second shadow = 5m = 500cm
320 x other pole = 560 x 500
other pole = 560 x 500 / 320
other pole = 875cm = 8m 60cm