### Home > CALC > Chapter 1 > Lesson 1.2.3 > Problem 1-54

1-54.

On graph paper, sketch the function , the region between

*and the*

*-axis, for*

Use geometry to find this area. Hint: Draw in a radius to create two easier regions whose difference is the shaded region.

Find

.Find

.

You should recognize as the equation of a semicircle, centered at the origin with radius

View the eTool. The height of the triangle is

Use the eTool below for parts (a) - (c).

Click the link at right for the full version of the eTool: *Calc 1-54 HW eTool*