Geometryhard · Past Paper
A circle is inscribed in a right-angled triangle with sides 6, 8, and 10. Find its radius.
A1
B2
C3
D4
✓ Correct Answer: B — 2
r = (a + b - c) / 2 for right triangles. r = (6 + 8 - 10) / 2 = 4 / 2 = 2.
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