So.... notice the picture below
now, we know what the "height" or "altitude" is
now, we also know the perimeter is 18cm
so, k + k + b = 18
or 2k + b = 18
thus
so... one can say that
and you can simplify it if you wish.. not sure you have to
Answer:
Step-by-step explanation:
You are to assume in both problems that the two triangles are similar. That is a very dangerous assumption -- especially in later math classes. But in this case, there is no other way to do the problem. The two sets of triangles look like they are proportional. So set up two ratios that are = to each other
On the left
long side small triange / long side large triangle = base small triangle / base large triangle
On the right
hypotenuse/longest leg = hypotenuse / longest leg.
Problem A
Set up the similar Proportion
5/40 = x/20 Cross Multiply
40x = 20*5
40x = 100 Divide by 40
x = 100/40
x = 2.5
Problem B
Again set up the similar triangle proportion
15/10 = x/2 Multiply by 2
15*2/10 = x
3 = x
Answer:
31
Step-by-step explanation:
i have no idea if that is right
Answer:
Step-by-step explanation:
If the ratio of the sides is 2:3:4, then the one represented by 2 is the shortest side. Also if the shortest side is 14, then
2x = 14 so
x = 7
That means that the next largest side is 3(7) = 21 and
the largest side is 4(7) = 28
