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.
Share this question
More from Geometry
- The length of the intercept made by the circle x^2 + y^2 = 25 on the X-axis is:
- A chord AB of a circle divides it into two segments. If the angle in the minor segment is 120 degrees, what is the angle in the major segment?
- Find 'k' if the point (2, 3) lies on the line 5x + ky - 4 = 0.
- The y-axis divides the line segment joining (3, 5) and (-2, 1) in the ratio:
- Two lines that intersect at 90 degrees are: