Mathematics for IGCSE & O level - Limits Of Accuracy (Section 2 - No. 8)

Calculate, to 3 significant figures, the lower bound of the distance travelled for a speed of 1.54m/second for 8.20 seconds, both values to 3 s.f.

12.5 km

12.58 m

12.6 m

12.604 m

Lower bound of speed = 1.535, lower bound of time = 8.195. Lower bound of distance = 1.535 x 8.195= 12.573 m