What is the area of the fire pit? (Use 3.14 for pi.)

Step-by-step explanation:

I will assume that the shaded region is the fire pit

Given

Required

Determine the area of the fire pit

First, calculate the area of the big circle.

Area of the small is:

The area of the pit is:

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

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