Answer:

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:







Answer:
159/day
Step-by-step explanation:
You will need to follow order of operations, which states that operations must be completed in the following order: parentheses, exponents, multiplication and division, and then addition and subtraction.
In this case, there are no parentheses and no exponents, so we will start with the multiplication and division:


Now, we will finish by doing addition and subtraction:



Our answer is
.
i can help you with 1 .Sorry that i cant do 2 because number 2 doesnt have all the question in the photo.
Answer:
a = 60
Step-by-step explanation:
90 + 30 = 120
120 - 180 = 60