Mathematics for IGCSE & O level - Limits Of Accuracy (Section 1 - No. 7)
What is the smallest perimeter of a triangle whose sides are 7 cm, 8 cm, and 10 cm, to the nearest cm?
24 cm
23.5 cm
23 cm
24.5 cm
คำอธิบาย
Using the lower bound for each side. 6.5 + 7.5 + 9.5