The sides of an isosceles triangle are measured correct to the nearest millimetre. One side has a length of $$\(8.2 \mathrm{~cm}\)$$ and another has a length of $$\(9.4 \mathrm{~cm}\)$$. Find the largest possible value of the perimeter of this triangle. ........................................ $$\(\mathrm{cm}\)$$
Exam No：0580_w20_qp_22 Year：2020 Question No：18
Answer:
27.15 cao
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.)
E5.2 Carry out calculations involving the perimeter and area of a rectangle, triangle, parallelogram and trapezium and compound shapes derived from these.
Solution:
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