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Answer : 3 12.5 cm Explanation : Answer: C) 12.5 cm Explanation: Let the required height of the building be x meterMore shadow length, More height(direct proportion)Hence we can write as(shadow length) 40.25 : 28.75 :: 17.5 : x⇒ 40.25 × x = 28.75 × 17.5⇒ x = 28.75 × 17.5/40.25= 2875 × 175/40250= 2875 × 7/1610= 2875/230= 575/46= 12.5 cm

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