Question

= 4,
It is given that A is directly proportional to r^2
where r>and A = 75 when r = 5. Find
(a) the value of A when r =
(b) the value of r when A = 147,
(c) the change in the value of A when the
value of r is doubled.​

Answer 1

Answer:

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Step-by-step explanation:

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