In a given triangle ABC, AB=17.5, AC=9. D is a point on BC such that AD is perpendicular to BC. Find the radius of the circle circumstanding in the triangle ABC.

• can any one explain me how
• 11 years agoHelpfull: Yes(5) No(2)
• 19.614 r=1/2(ab+bc+ac) here CD/AC=AC/BC =>CD/9=9/BC CD=1/2(BC)hence 1/2(BC)^2=81 BC=12.726 therefore 1/2(17.5+12.726+9)=19.614
• 11 years agoHelpfull: Yes(0) No(26)
• Ans is 26.25
  using the formula a*b*c*/4*area of the triangle
  if we take base as 'a' then area turns out to be 3a/2 and using the above formula we get the ans as 26.25
• 11 years agoHelpfull: Yes(0) No(1)