Try another version of this question Get help: Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4) Box 2: Enter your answer as an equation. Example: y=3x^2+1, 2+x+y=3
Box 3: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
`A` varies directly with `r^2` and when `r=2`, `A=52`
Give the constant of proportionality, `k=`
Give the function that relates the relates A and r.
If `r=7`, then `A=`
Enter DNE for Does Not Exist, oo for Infinity 13
Be sure your variables match those in the question `A = 13 r^2`
Enter DNE for Does Not Exist, oo for Infinity 637