Mathematics for IGCSE & O level - Limits Of Accuracy (Section 2 - No. 36)
A triangle has sides of length 7 cm, 8 cm and 10 cm. All measurements are correct to the nearest centimeter. What is the upper bound of the perimeter of the triangle?
24.0 cm
25.0 cm
25.5 cm
26.0 cm
Explanation
Upper bound of sides: 7.5cm, 8.5cm, 10.5cm. Perimeter = 7.5 + 8.5 + 10.5 = 26.5. Therefore it's 26.0 (rounded).
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