Mathematics (AS & A Level) · May / June 2020 · Paper 12 · Question 3
9709
As printed in the paper
The question as text
A weather balloon in the shape of a sphere is being inflated by a pump. The volume of the balloon is increasing at a constant rate of 600 cm3 per second. The balloon was empty at the start of pumping.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
3(a)[2]
3(b)[3]
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