Find the Arc Length For $\mathbf { r } ( t ) = \mathbf { i } + 5 t ^ { 2 } \mathbf { j } + 8 t ^ { 3 } \mathbf { k } \text { over the interval } [ 0,2 ] \text {. Round your }$

question 71

Multiple Choice

Find the arc length for $\mathbf { r } ( t ) = \mathbf { i } + 5 t ^ { 2 } \mathbf { j } + 8 t ^ { 3 } \mathbf { k } \text { over the interval } [ 0,2 ] \text {. Round your }$ answer to two decimal places.

• A)67.63
• B)73.37
• C)79.40
• D)49.75
• E)62.97

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