A rectangular water tank carries 40000 litres of water what is the best area if its height is 2 m
1 answer:
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Answer:
k = 4
Step-by-step explanation:
Given that a varies directly as b then the equation relating them is
a = kb ← k is the constant of variation
To find k use the condition a = 8 when b = 2
k = =
= 4