Question: (1 point) The vector equation r (u, v) = u cos vi + u sin vj + vk, 0 A torus of radius 10


(1 point) The vector equation r (u, v) = u cos vi



+ u sin vj + vk, 0 A torus of radius 10

(1 point) The vector equation r (u, v) = u cos vi + u sin vj + vk, 0 A torus of radius 10 (and cross-sectional radius 1) can be represented parametrically by the function r : D + R': r(6, 4) = ((10 + cos p) cos 0, (10 + cos 4) sin 0, sin ) !3! where D is the rectangle given by 0 < 0 S 2n, 0 s s 2a. The surface area of the torus is

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