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Answer:
21
Step-by-step explanation:
The legs are 12 cm each, so the hypotenuse is√(144+144)=12√2☺☺☺☺
Let the side length of the square be x, then A = x^2
but diagonal (z) = sqrt(2x^2)
z^2 = 2x^2
x^2 = 1/2 z^2
Thus, A = 1/2 z^2
dA/dz = 1/2 (2z) = z
The rate of change is z.
When z = 4, the rate is 4.
Answer:
The triangle would be Obtuse