The radius of a circle circumscribed about a triangle ABC with sides 26, 24 and 10 is …

univerkov | November 29, 2020 | education

There is a formula: R = abc / 4S.
We find the area by Heron’s formula:
p = 26 + 24 + 10 * 1/2 = 30
S = √ 30 * 6 * 20 * 4 = 3600 * 4
S = 60 * 2 = 120
R = 24 * 26 * 10/120 * 4 = 13

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