Posted by **leon** on Tuesday, December 6, 2011 at 5:30am.

triangle ABC is right angled at A. AD is perpendicularto BC. If AB= 5cm,BC= 13cm and AC=12 cm.find the area of triangle ABC. Also find the length of AD.

- Maths -
**drwls**, Tuesday, December 6, 2011 at 7:15am
The area is (1/2)*5*12 = 30 cm^2

You get that from the two perpendicular legs, which form a base and height.

Since AD is the height h' from base b' = BC,

(1/2)*h'*13 = 30

h' = 60/13 = 4.615 = length of AD

## Answer this Question

## Related Questions

- Maths - Triangle ABCis right angled at a .AD is perpendicular to BC.If AB=5cm,BC...
- MATHS,7TH CLASS - A RIGHT ANGLED TRIANGLE ABC IS GIVEN,WHERE AB IS 5CM,AC IS ...
- maths-urgently needed - In right angled triangle ABC angle B=90 degree and AB= ...
- mathematics - a right angled triangle abc whose sides are 5cm,12cm and 13cm ...
- math - B . . . . . . . . . . . . . . C A Triangle ABC is right angled at A. The...
- sanket study centre - In triangle ABC p,q,r such that they lie interior of ...
- 9th grade - given that a(-1,8) ,b(2,4) and if the line y=4 is the axis of ...
- HELP!!!!RIGHT NOW!!!! - Which set of side lengths shows similar triangles? (1 ...
- Math - In above triangular prism,ab=3cm,ac=4cm,bc=5cm and cd12 cm,show that ...
- maths - In TRIANGLE ABC points P,Q,R arethe points lies inside triangle in such...

More Related Questions