Answer:
A)
Step-by-step explanation:
The letter of the corners go in the same order for both triangles
You can use permutations when order matters and use combinations when order doesn’t matter.
The answer is $2.34. I attached an explanation thing below. Forgive my ugly handwriting.
The equation is given to compute A(7) = A(r) pi r²
7 = pi r²
r² = 7/pi
value of pi = 3.14
so,
r² = 7/3.14
r = √ (7/3.14)
r = 1.49