Question

ABC is a right triangle in which b =90. a circle is inscribed in the triangle .If the AB =8 cm and BC =6cm find the radius r of the circle

Answer 1

B=90. so AC=10

so r=

$\frac{ab + bc - ac}{2} \\ \\ so \: r = \frac{8 + 6 - 10}{2} \\ \\ so \: r = 2$