b Draw a curve y f x given the sign chart of its 2nd derivative of y 5 Use derivatives to find approximate changes in geometric measurements For all the formulas below be able to find the differential of one variable with respect to another variable and find the rate of changes at given specified values Perimeter and Area of Plane Figures Triangle Rectangle P 2 2 Parallelogram PA333 Trapezoid Postboced Circle C 2xr Amar Volume and Surface Area of Solid Figures Rectangular Prim V luk 5 2 2 2 Right Circular Cylinder Vwar k S 2 2 Sphere V Smar Right Circular Con Swar 7 For the circle and sphere 1 a Find dC in term of dr What is dC if dr 1cm b Express the radius r in terms of the circumference C Find dr in terms of dC Find dr if dC 2 cm Ans a dC 2ndr dC 2 cm if dr 1 cm b r C 2n dr dC 2n dr 1 n cm