Chapter 1 - Tools of Geometry - 1-8 Perimeter, Circumference, and Area - Practice and Problem-Solving Exercises - Page 65: 27

$153.9\ ft^2$

To find the area of a circle, we use the formula $A=\pi r^2$ $\pi$ is approximately 3.14. Plug in the given radius and approximate the value of $\pi$ in the formula and simplify: $A=\pi r^2=3.14\times7^2=3.14\times49=153.9$