Final answer:
To calculate the installation cost of the granite countertop, we need to find the area by multiplying the length and width. Then, multiply the area by the cost per square foot.
Step-by-step explanation:
To calculate the installation cost, we need to multiply the area of the granite countertop by the cost per square foot. The area can be calculated by multiplying the length and width of the countertop. Let's assume the width of the countertop is 5 feet. So, we can find the length by dividing the total square footage (27.5) by the width (5), which gives us 5.5 feet. Now, we can calculate the area by multiplying the length (5.5) by the width (5), which gives us 27.5 square feet.
Next, we multiply the area (27.5 square feet) by the cost per square foot ($55.50) to find the installation cost. We can do this by multiplying 27.5 by 55.50, which gives us $1,526.25 as the installation cost.