Gce Model Questions Vol1 2023 Agricultural Science Question 19
Practice objective / multiple choice question 19 from the 2023 Gce Model Questions Vol1 Agricultural Science examination.
The field is a square 2 km on a side, centred on the initial infection point. The disease spreads radially at 0.8 km month\(^{-1}\). A barrier treatment creates a protected zone extending 1 km beyond the treated area, preventing further spread. If the farmer treats a circular area of radius \(r\) km around the centre at the start of month 1, what is the minimum value of \(r\) (to two decimal places) that ensures the disease does not reach any part of the field after 3 months?
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About This Question
This is Gce Model Questions Vol1 2023 Agricultural Science Question 19. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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