## Chapter 10, Lesson 4

**10-4.A** distinguish between exact values and approximations

**For which calculation is the result an exact value?**

**10-4.B** apply the area formula for a parallelogram

**Which calculation can be used to find the area of the indicated parallelogram ABCD?**

**10-4.C** recognize inverse operations

If *x*^{2} = 64, which calculation should you use to find *x*?**I** Divide by 2.**II** Multiply by 2.**III** Take the square root.

**(a)** I or III only **(b)** I only **(c)** II only **(d)** III only