L = building side
W = non-building side
P = 2W + L = 42 (note only one L because the other L is the building itself)
Solve for L:
L = 42 - 2W
Area = l*w
Area = (42-2W)W = 42W - 2W2
Let area be y, so y = -2W2 +42W
Note this is a parabola pointing down because the coefficient of the W2 is negative. That makes the vertex the maximum for which we are searching.
Vertex of this parabola is at W=-b/2a, if the quadratic is aW2 + bW + c = 0
a = -2
b = 42
W = -42/(2*-2) = -42/-4 = 10.5
W = 10.5
L = 42-2(10.5) = 42-21 = 21
Area = L*W = 21 * 10.5
A = 220.5 ft2
1 7/10 kg
Hope this helps! (:
Answer: Right Triangle
Step-by-step explanation:
I apologize for my original answer not living up to your expectations. I myself was a bit confused. But I will now provide an explanation. The way the image is tilted, it does not seem like a right triangle. But it is. The coordinates imply something else, but they are a tease. If you look upon the triangle in another way, it will look, or become, straight. Hopefully this explanation is helpful. Once again, I apologize.
