Mathematics 4024 · O Level · Limits of accuracy

Limits of accuracy — practice question

A rectangle has a width of $5.4\text{ cm}$, rounded to the nearest $0.1\text{ cm}$.

(a)[1]

State the upper bound for the rectangle's width.

(b)[2]

The rectangle's perimeter is $26.4\text{ cm}$, rounded to the nearest $0.1\text{ cm}$. Calculate the lower bound of the rectangle's length.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The upper bound is $5.45$.” …