The Two Radii of the Frustum of a Right Circular

question 17

Multiple Choice

The two radii of the frustum of a right circular cone are increasing at a rate of 7 centimeters per minute, and the height is increasing at a rate of 11 centimeters per minute (see figure) . Find the rate at which the surface area is changing when the two radii are 16 centimeters and 26 centimeters, and the height is 13 centimeters. [Note: The surface area does not include the top and bottom circles.] Round your answer to two decimal places.

---

Definitions:

Quantity of Sales

The total number of units of a product sold over a specified period of time.

Financial Data

Information related to the financial performance of an entity, including income, expenses, assets, and liabilities.

Annual Cost

The total amount of money required to operate or maintain something over the course of a year.

Financial Data

Quantitative information pertaining to financial transactions, including revenues, expenses, profitability, and market performance.