Answer:
![DE=18.38](https://tex.z-dn.net/?f=DE%3D18.38)
Step-by-step explanation:
It is given that the length of triangle base is 26 that is BC=26.
A line, which is parallel to the base divides the triangle into two equal area parts.
Therefore, from the given information,
.
Now, since it is given that A line, which is parallel to the base divides the triangle into two equal area parts, thus
![\frac{ar ADE}{arABC}=\frac{1}{2}=\frac{(DE)^{2}}{(BC)^{2}}](https://tex.z-dn.net/?f=%5Cfrac%7Bar%20ADE%7D%7BarABC%7D%3D%5Cfrac%7B1%7D%7B2%7D%3D%5Cfrac%7B%28DE%29%5E%7B2%7D%7D%7B%28BC%29%5E%7B2%7D%7D)
⇒![\frac{(DE)^{2}}{(BC)^{2}}=\frac{1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B%28DE%29%5E%7B2%7D%7D%7B%28BC%29%5E%7B2%7D%7D%3D%5Cfrac%7B1%7D%7B2%7D)
⇒![\frac{(DE)^{2}}{(26)^{2}}=\frac{1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B%28DE%29%5E%7B2%7D%7D%7B%2826%29%5E%7B2%7D%7D%3D%5Cfrac%7B1%7D%7B2%7D)
⇒![(DE)^{2}=13{\times}26=338](https://tex.z-dn.net/?f=%28DE%29%5E%7B2%7D%3D13%7B%5Ctimes%7D26%3D338)
⇒![DE=18.38](https://tex.z-dn.net/?f=DE%3D18.38)
Answer:
163200m
Step-by-step explanation:
since there is two 17's you qould need to multiply 17 x 2 and then u multiply it times 15 then times 16 but there is two 16's so u multiple that then 10 and that should get you your answer
Answer:
1. RQ
2. R, Y and V
3. T
4. No
Step-by-step explanation:
If we imagine a plane as a rectangle, we can easily see that planes RSTQ and RVUQ intersect in line RQ. Basically, if two planes intersect each other, that intersection is always a line.
Collinear points lie on the same line. Every two points make a line, so the third one also needs to lie along that line. On the diagram, R, Y and V are the only three points on the same line.
From the diagram, we can infer that QT and TX intersect in point T. Additionally, every two lines intersect in a point (of course, unless they're parallel).
Coplanar points lie in the same plane. Three points are enough to define a plane. Whichever three points (R, Q, W and U) we choose we'll have a plane, but the fourth point won't lie in it. This means they are not coplanar.