What is the area (in cm2) of a circle that circumscribes a triangle with sides 28 cm, 45 cm and 53 cm?

Explanation

28² + 45² = 784 + 2025 = 2809 = 53², so the triangle is right-angled and the hypotenuse 53 is the diameter. R = 26.5 and the area = π × 26.5² = 702.25π cm².