Mathematics for IGCSE & O level - Limits Of Accuracy (Section 1 - No. 14)

Given that the area of a rectangle is 21.0 cm² to 3 significant figures, and the length is 17.8 cm to the nearest millimetre. The minimum width is (in cm)

1.18 cm

1.180 cm

1.186 cm

1.185 cm

Explanation

Area: 20.95 - 21.05, length 17.75 - 17.85. Minimum width = 20.95 / 17.85 = 1.1736 cm. To 3 sig fig the answer is 1.18 cm

Mathematics for IGCSE & O level - Limits Of Accuracy (Section 1 - No. 14)

Explanation

Comments (0)