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A lamp is 3.3m above the ground. A boy 110cm tall walks away from the base of the lamp post at speed of 0.8m/s. Find the length of the shadow of the boy after 4 seconds.plz can someone help me solve this along with the diagram |
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Answer» Length of shadow of boy = 160 cm = 1.6 m Step-by-step explanation: Lamp height = 3.3 m = 330 cm Boy length = 110 cm boy speed = 0.8 m/s = 80 cm/sec Distance covered in 4 secs = 80 * 4 = 320 cm let say shadow length = d cm => 110/d = 330/(320 + d) => 320 + d = 3d => 2d = 320 => d = 160 Length of shadow of boy = 160 cm = 1.6 m Plz mark brainliest Step-by-step explanation: |
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