Maths: Heron's Formula and Circle Statistics Quiz

A = 1/2 * (a + b + c), where a, b, c are the sides

A = 1/2 * base * height

A = πr^2, where r is the radius of the inscribed circle

A = √(s(s-a)(s-b)(s-c)), where s is the semi-perimeter and a, b, c are the sides (correct)

C = 1/2 * πr^2, where r is the radius

C = πr^2, where r is the radius

C = πd, where d is the diameter

C = 2πr, where r is the radius (correct)

The middle value in a set of numbers when arranged in ascending order

The average of a set of numbers (correct)

The value that occurs most frequently in a set of numbers

The difference between the highest and lowest values in a set of numbers