Here is an inflated swimming ring with dimensions in centimetres. The volume of the ring, V cm”, is given by
b
V = 0.251²(b − a)?(b + a)
a
Work out the volume when a = 35 and b = 45
Give your answer to 3 significant figures.
Total marks: 3
MathsWatch Ltd.
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He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

What is r i 4.5+10r=-6.5 with work pls

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