if a tabletop has a diameter of 42 in detremine

Question

If a tabletop has a diameter of 42 in, Detremine the surface area to the nearest inch? (π = 3.14)

a. 1,384 in²

b. 1,319 in²

c. 1,385 in²

d. 5,539 in²

c. The area of a circle is πr². The diameter  = 42 in, radius = 42 ÷ 2 = 21 in, so (3.14)(21)2 = 1,384.74 in². Rounding to the nearest inch, the answer is 1,385 in². If you select a, you rounded the ?nal answer incorrectly.  If you select d, you used the diameter rather than the radius.