$$\[ P=2(w+h) \]$$ $$$w=12$$$ correct to the nearest whole number. $$$h=4$$$ correct to the nearest whole number. Work out the upper bound for the value of $$$P$$$.

Mathematics

IGCSE&ALevel

CAIE

Exam No：0580_s20_qp_21 Year：2020 Question No：18

Answer:

Knowledge points:

E1.10.1 Give appropriate upper and lower bounds for data given to a specified accuracy. (e.g. measured lengths.)

E1.10.2 Obtain appropriate upper and lower bounds to solutions of simple problems given data to a specified accuracy. (e.g. the calculation of the perimeter or the area of a rectangle.)

Solution:

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$$\[ P=2(w+h) \]$$ $$\(w=12\)$$ correct to the nearest whole number. $$\(h=4\)$$ correct to the nearest whole number. Work out the upper bound for the value of $$\(P\)$$.

Answer:

Knowledge points:

Solution:

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