Answer:
<h2>
30 cm²</h2>
Step-by-step explanation:
- Area of triangle = 1/2 (base × height)
1/2(12*5)=
1/2*60=
30 cm²
Answer:
and
are two such planes.
Step-by-step explanation:
To find the two planes whose intersection is the line

You can say that <em>t</em> is equal to this expression

Next,

Then,
and
are two such planes.
You can see in the image attached that the intersection of this planes is the line

Yes 2/4 is 1/2 because if you have a pie and you cut it in four pieces then you eat to you only got two pieces left so there you only have half a pie left.
Answer:
39
Step-by-step explanation:
2*3*6.5=6*6.5=39
Answer:
The area of the parallelogram is
.
Step-by-step explanation:
Let's rewrite these two vectors:

Let's recall that the area of the parallelogram is the magnitude of the cross product between these vectors.
We can use the Determinant method to find it.
![u \times v=\left[\begin{array}{ccc}i&j&k\\1&-2&2\\0&3&-1\end{array}\right] = i((-2)*(-1)-2*3)-j(1*(-1)-2*0)+k(1*3-(-2)*0)=i(2-6)-j(-1)+k(3)=-4i+j+3k](https://tex.z-dn.net/?f=u%20%5Ctimes%20v%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Di%26j%26k%5C%5C1%26-2%262%5C%5C0%263%26-1%5Cend%7Barray%7D%5Cright%5D%20%3D%20i%28%28-2%29%2A%28-1%29-2%2A3%29-j%281%2A%28-1%29-2%2A0%29%2Bk%281%2A3-%28-2%29%2A0%29%3Di%282-6%29-j%28-1%29%2Bk%283%29%3D-4i%2Bj%2B3k)
Now, the magnitude is the square root of each component squared. It will be:

Therefore the
.
I hope it helps you!