Ineed answer for this any one me

C = 97.20

Step-by-step explanation:

Given that C varies as r² then the equation relating them is

C = kr² ← k is the constant of variation

To find k use the condition C = 202.80 when r = 2.6

k = = = 30

C = 30r² ← equation of variation

When r = 1.8, then

C = 30 × 1.8² = 97.20

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula

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