What is the area of the top of a jar if the diameter of the jar is 3.00 inches?
Start with the formula for the area of a circle: area = (pi)(radius)2
Then remember to divide the diameter in half to get the radius (3.00/2 = 1.50)
Then plug in the numbers:
area = (3.14)(1.50)2
area = (3.14)(2.25)
area = 7.065 square inches
To round it to the nearest hundreth (thank you, Steve!) if you normally do that: 7.07 square inches