All ACT Math Resources
Example Question #1 : How To Find The Area Of An Acute / Obtuse Triangle
The base of a triangle is and the area is . The height of the triangle is then decreased by . What is the final area of the triangle?
The formula for the area of a triangle is
If the area is equal to 48 cm2 and the base is 8 cm, then the initial height is:
If 12 is decreased by 75% then
, and . The final height is 3 cm.
Therefore the final area is