Geometry_2
Geometry
Level
2
ABC is a triangle. AB = 5 cm, AC = √41 cm and BC = 8 cm. AD is perpendicular to BC. What is the area (in cm2) of triangle ABD?
The answer is 6.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
Using, heron's formula, find s. After that one can find the area of triangle ABC(=16). Now, area of triangle ABC= 1/2 * AD * BC given, BC=8, we are able to find AD, Then in triangle ABD, Using pythagorus theorem, find BD. Using ad as height and BD as base, we can find area of triangle ABD.=(1/2 * BD * AD)= (1/2 * 3 * 4)=6