9514 1404 393
Answer:
7%
Step-by-step explanation:
The tax rate is the ratio of tax to pre-tax cost:
$4.20/$60.00 = 0.07 = 7%
The constant of variation (tax rate) is 7%.
An architect is trying to build a cover for two cylinders. He knows the radius of Cylinder 1 is 15 inches and the radius of Cylinder 2 is 16 inches. What is the area of both circles?