Success is the sum of small efforts repeated day in and day out.— Robert Collier

Heron's Formula — quick quiz

5 real SOF IMO questions on Heron's Formula. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 5

HARD

A triangle has sides in the ratio 5:12:13 and its perimeter is 60 cm. What is the area of the triangle?