GCSE Maths Practice: circle-properties

Question 3 of 10

This question teaches the approximate value of π.

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\( \begin{array}{l}\text{What is the approximate value of } \pi\text{?}\end{array} \)

Choose one option:

Use 3.14 as an approximation for π in calculations unless a more precise value is required.

Pi (π) is a constant representing the ratio of a circle's circumference to its diameter. Its approximate value is 3.14. Understanding π is fundamental for calculating circle properties such as circumference and area. Students should memorise this approximation for calculations and practice applying it in formulas. Using π, the circumference of a circle is calculated as 2πr or πd, and the area as πr². Familiarity with π helps in problem-solving, geometric proofs, and real-world applications involving circular objects, engineering, and navigation. Practising examples ensures confidence in identifying where and how to use π in calculations.