Two chimneys 18m and 13m high stand upright in the ground. If their feet are 12m apart, then the distance between their tops isA5 mB31 mC13 mD18 mAnswer: C. 13 m Read Explanation: 12 ² + (13 - 8)² = distance ² distance = √(144+25) = √169 = 13 mRead more in App