These basket trays have a diameter of 12 cm each.find the cost of these 3 basket trays if 1 square centimeter is k1.50?

First, we need to calculate the area of one basket tray:

Area = πr^2
Area = π(6cm)^2
Area = 36π cm^2

Now, we need to calculate the total area of 3 basket trays:

Total area = 3 * 36π cm^2
Total area = 108π cm^2

Given that 1 square centimeter is k1.50, we can calculate the cost of the 3 basket trays:

Cost = Total area * k1.50
Cost = 108π * k1.50
Cost ≈ 508.94

Therefore, the cost of these 3 basket trays is approximately k508.94.

Step 1: Calculate the area of one basket tray.

Area = πr²
where r is the radius, which is half the diameter.

r = 12 cm / 2 = 6 cm
Area = π(6 cm)² = 36π cm²

Step 2: Calculate the cost of one basket tray.

Cost of one basket tray = Area - k1.50/cm²
Cost of one basket tray = 36π cm² - k1.50/cm²

Step 3: Calculate the total cost of three basket trays.

Total cost = Cost of one basket tray - 3
Total cost = (36π cm² - k1.50/cm²) - 3

Step 4: Simplify the expression.

Total cost = 108π k1.50

Therefore, the cost of these 3 basket trays is 108π k1.50.