Randal builds and sells cabinets. when deciding what price to charge for a project, he considers the cost of materials and the time he will spend on the project. (he charges $18 per hour of labor.) then he adds 15 percent for operational costs. andrea’s cabinets will require $2,125 of materials and 80 hours of labor. how much will randal charge for andrea’s cabinets?

Randal will charge $4099.75.

Step-by-step explanation:

Randal builds and sells cabinets.

He charges $18 per hour of labor. While pricing, he considers the cost of materials and the time he will spend on the project. Then he adds 15% for operational costs.

Andrea’s cabinets will require $2,125 of materials and 80 hours of labor.

So, total charges will be : dollars

Now 15% operational costs on $3565 is :

dollars

So, the total cost Randal will charge = dollars.

Therefore, Randal will charge $4099.75.

The area of the circle is calculated through the equation,

                               A = πr²

With this reasoning, the value of the area of the semicircle is equal to  

                                      A = πr²/2

Substituting the known variables,  

                                         A = π(8.5 mm)²/2

                                         A = 113.49 mm²

Therefore, the answer is approximately 113.43 mm², third choice.