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 difference between the circumference and the radius of a circle is 37 cm. What is its radius?
- Find the coordinates of the point dividing the segment (2, 3) and (7, 8) externally in the ratio 2:1.
- A triangle in which all three sides are of different lengths is called a/an:
- Angle between lines x = 5 and y = 10 is:
- What is the equation of the line whose slope is -1 and y-intercept is 3?