Asked by Shaniqua

Lobster fishers in Maine often use spherical buoys to mark their lobster traps. Every year the buoys must be repainted. An average buoy has a 12 inch diameter, and an average fisher has about 500 buoys. A quart of marine paint covers 175 ft squared. How many quarts of paint does an average fisher need each year?

Answers

Answered by Ms. Sue
Let's change the inches to feet.

SA = 4 * 3.14 * 0.5^2
SA = 6.28 sq. feet

(500 * 6.28)/175 = 17.94 = 18 quarts



Answered by Steve
area of 1 buoy: pi d^2 = 144pi
so, quarts of paint:

q = 144pi * 500 / 175
Answered by Steve
oops - Go with Ms Sue - I forgot to change inches to feet.
Answered by Ms. Sue
And I forgot to square the radius.

SA = 4 * 3.14 * 0.5^2

SA = 3.14 square feet

(500 * 3.14)/175 = 8.97 = 9 quarts

Answered by Shaniqua
Thanks!
Answered by Ms. Sue
You're welcome. Sorry about the mixup.

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