MHB What is the multiplier for finding the area of triangle ADG?

[alextrainer]

Not sure how to use a single area and line segments that are same to calculate the areas and line segments for the areas.

 

[Greg]

Using the formula for the area, $A$, of a triangle

$$A=\frac{bh}{2}$$

where $b$ is the base of the triangle and $h$ is the height of the triangle, can you state the area of triangle $CDE$ in terms of $AG$ and $DG$?

 

[alextrainer]

(3)42 = 84/2 so b times h equals 84

 

[Greg]

$$\frac{\frac13AG\cdot\frac13DG}{2}=42$$

Now, what number can we multiply both sides of the above equation by to find $\triangle{ADG}$?

 

[MarkFL]

$$\frac{\frac13AG\cdot\frac13DG}{2}=42$$

Now, what number can we multiply both sides of the above equation by to find $\triangle{ADG}$?

Greg, I'm glad you can read that tiny sideways image, because I sure can't. (Bandit)