Question
The angle of a sector of a circle is 75 If the radius of this circle is increasing at the rate of 0.3cm/s find the rate of increase of the area when the radius is 6cm
Answers
Scott
a = 75/360 * π * r^2
da/dt = 75/360 * π * 2r dr/dt
da/dt = 75/360 * π * 2 * 6 * 0.3
da/dt = 75/360 * π * 2r dr/dt
da/dt = 75/360 * π * 2 * 6 * 0.3
Ojawa ifeoma
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Kiki
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Raymond
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