### Home > APCALC > Chapter 10 > Lesson 10.2.1 > Problem 10-115

10-115.

Draw a diagram and use it to write an equation.

Differentiate your equation from Step 1.

What is the value of *d* when ?

Evaluate your equation from Step 2 for ,

*, and*

*.*

10-115.

Draw a diagram and use it to write an equation.

Differentiate your equation from Step 1.

What is the value of *d* when ?

Evaluate your equation from Step 2 for ,