Mathematics, 19.11.2020 21:20 EMscary4996
A piece of wire of length 24 cm is bent to form the perimeter of a sector of a circle of radius rcm.
i Show that the area of the sector, Acm², is given by A = 12r - r2.
ii Express A in the form a - (r - b), where a and b are constants.
iii Given that r can vary, state the greatest value of A and find the corresponding angle of the sector.
Answers: 3
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A piece of wire of length 24 cm is bent to form the perimeter of a sector of a circle of radius rcm....
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