A ball has a diameter of 14 inches. Which choice is closest to its surface area? Use 3.14 to approximate pi.
1 answer:
So we know the formula to find the surface area of a sphere (ball) is:
4 x pi x r^2
to find the radius, divide the diameter by 2 to get:
14 / 2 = 7
now we substitute in the values:
4 x pi x 7^2
simplify:
4 x pi x 49
simplify:
12.56 x 49
simplify:
615.44 inches
the answer is above in bold
hope it helped :)
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