Question 46 Answer and Explanation _ACT 1996 Form 52C Math Section

Question 46 Answer and Explanation _ACT 1996 Form 52C Math Section

ACT Test Explanations Profile Exam History

Logout

46. If the total surface area, A, of a cylinder (including its ends) is given by the formula A = 2πr²+ 2πrh, which of the following expresses h in terms of A and r?

F. $h=\frac{A}{2\pi{r}^{2}}$

G. h = 2πrA - r

H. $h=\dfrac{A}{2\pi r+r}$

J. $h=\dfrac{A+2\pi r}{2\pi }$

K. $h=\dfrac{A-2\pi r^{2}}{2\pi r}$

Answer and Explanation

Your Answer is

Correct Answer is K

Explanation

By changing the expression of h to k. Choose K.