A horizontal rectangular surface has dimensions $3\mathrm{.}10$ cmcm by $3\mathrm{.}50$ cmcm and is in a uniform magnetic field that is directed at an angle of $35\mathrm{.}0$ above the horizontal.

Part A

What must the magnitude of the magnetic field be to produce a flux of $3\mathrm{.}201044$ WbWb through the surface?

Express your answer with the appropriate units.

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BB $=$

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