Question

Balenia 1 in fig. (i). Abc is a triangle in which b=90 bc= 48 cm and=14 em circle is inscribed in the triangle, whose centre is o find radius

Answer 1

radius of the incircle of triangle= area/semi perimeter

p is half the perimeter, or

P=(18+24+30)/2 = 36

A=square root of (36(36-18)(36-24)(36-30))

=square root of (36*18*12*6)

=216 s.cm

radius of the incircle of triangle= 216/36=6cm