The side of a rhombus is 10cm long, correct to the neares...
The side of a rhombus is 10cm long, correct to the nearest whole number. Between what limits should the perimeter P lie?
39cm ≤ P ≤41cm
38cm ≤ P < 42cm
38.5 ≤ P ≤ 41.5cm
38.5 ≤ P ≤ 40cm
Correct answer is B
If the side = 10 cm, correct to the nearest whole number, then
The side ranges from 9.5 cm to 10.5 cm. (9.5 ≤ s < 10.5)
Perimeter of a rhombus = 4 x side
∴ 4 x 9.5 \leq perimeter < 4 x 10.5
= 38 cm \leq P < 42 cm
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