Which equation represents a graph with a vertex at (1, –6)?

the radius is 2 times the diameter.

step-by-step explanation:

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

pi or 3.14159265359 is an irratinal decimal