You are asked to set up a 300 foot diameter security perimeter around a planed fireworks event. How many 50 foot rolls of snow fencing is needed? a. 18 rolls b. 19 rolls c. 16 rolls d. 20 rollsYou are asked to set up a 300 foot diameter security perimeter around a planed fireworks event. How many 50 foot rolls of snow fencing is needed? a. 18 rolls b. 19 rolls c. 16 rolls d. 20 rolls