OpenStax, Algebra and Trigonometry 2e §5.7 Inverses and Radical Functions · Exercise 73 · Algebra · Polynomials

Inverses and Radical Functions · Exercise 73

Determine the function described and then use it to answer the question.

The surface area, $A,$ of a cylinder in terms of its radius, $r,$ and height, $h,$ is given by $A = 2 π r^{2} + 2 π r h .$ If the height of the cylinder is 4 feet, express the radius as a function of $A$ and find the radius if the surface area is 200 square feet.

~8 minWritten answer · compare with the solution

OpenStax, Algebra and Trigonometry 2e · §5.7 Inverses and Radical Functions · Exercise 73

Stuck? A gentle nudge

No hints for this one.

Something off?

Workspace

Your working

Check your full solution

Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.