### Home > CALC > Chapter 8 > Lesson 8.3.3 > Problem8-126

8-126.

Multiple Choice: The base of a solid is a region in the first quadrant under the curve $f(x) =\sqrt { x - 4 }$. The cross-sections of the solid perpendicular to the $x$-axis are squares. What is the volume of the solid?

1. $8$

1. $\frac { 16 } { 3 }$

1. $\frac { 64 } { 9 }$

1. $8\pi$

1. $\frac { 16 \pi } { 3 }$

Volume by Cross Sections $=\int_{x=a}^{x=b}(\text{Area function})dx$