The area of the square is side times side, $\displaystyle 3\times3=9$.

Each triangle is half of the square, $\displaystyle 9\div2=4.5$.

The formula to find the area of a triangle is 

$\displaystyle \frac{base \times height}{2}$

First, we should multiply $\displaystyle 3$ (base) $\displaystyle \times$ $\displaystyle 4$ (height), to get a total of $\displaystyle 12$.

Next, we need to divide $\displaystyle 12$ by $\displaystyle 2$, which gives us a total area of $\displaystyle 6$. 

To find the area of a triangle, you must multiply $\displaystyle \frac{1}{2}$ by the base (12 cm) by the height (6 cm):

$\displaystyle \frac{12\: cm}{2}\times6 \: cm=36\: cm^{2}$

Therefore the area of this triangle is $\displaystyle 36\: cm^{2}$.

To find the area of a triangle, multiply the base (14) by the height (8) and divide by 2:

$\displaystyle \frac{14}{2}\times8=56$

Therefore the area of this triangle is $\displaystyle 56$.

The formula to find the area of a triangle is $\displaystyle \frac{base \times height}{2}$.

$\displaystyle A = \frac{6\times 8}{2}=24$

The formula for the area of a triangle is  $\displaystyle \frac{1}{2} \times base \times height= area$.

Plug in the values given to solve the equation:  

$\displaystyle \frac{1}{2}(3\;in)(8\;in)=$ 

$\displaystyle \frac{1}{2}\times 3\;in \times 8\;in = \frac{1}{2}\;\times24\;in^{2}=12\;in^2$

The formula for the area of a triangle is $\displaystyle area=\frac{1}{2}(base)(height)$.

Plug in the given values to solve for the area:

$\displaystyle \frac{1}{2}\times10cm\times12cm$

 = $\displaystyle 5cm\times12cm$

 = $\displaystyle 60cm^2$ 

The area of this triangle is $\displaystyle 60cm^{2}$.

The area of a triangle is given by the formula $\displaystyle A = \frac{1}{2}\times b \times h$, where $\displaystyle b$ is the length of the base and $\displaystyle h$ is the height.

First let's figure out the height. The base is 4, and the height is 3 times greater than the base:

$\displaystyle 3 \times 4 = 12$

Now plug the base and height into the area formula:

$\displaystyle A = 0.5 \times 4 \times 12 = 2 \times 12 = 24$

The area of the triangle is 24.

To calculate the area of a triangle, you use the formula $\displaystyle \frac{1}{2}\cdot b\cdot h$, where $\displaystyle b$ is the length of the base of the triangle and $\displaystyle h$ is the height of the triangle. For this triangle, we need to solve the equation $\displaystyle \frac{1}{2}\cdot 6 \cdot 8$ to find its area. $\displaystyle 6\cdot 8=48$ and $\displaystyle 48\div2=24$, so the triangle's area is $\displaystyle 24$ units squared.

Write the formula for area of a triangle.  Substitute the dimensions.

$\displaystyle A=\frac{bh}{2} = \frac{(12)(20)}{2} = 12(10)=120$