The night before the exam, sleep. A rested mind recalls what a tired one has only read.

Heron's Formula — quick quiz

5 SOF IMO-pattern questions on Heron's Formula. Instant scoring and solutions, no signup — see where you stand in a few minutes.

Question 1 of 5

Hard

A triangle has sides in the ratio 3:4:5 and its perimeter is 84 cm. What is the area of the triangle?