Evaluate
154\pi \approx 483.805268653
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14\pi \times 4+2\pi \times 7^{2}
Multiply 2 and 7 to get 14.
56\pi +2\pi \times 7^{2}
Multiply 14 and 4 to get 56.
56\pi +2\pi \times 49
Calculate 7 to the power of 2 and get 49.
56\pi +98\pi
Multiply 2 and 49 to get 98.
154\pi
Combine 56\pi and 98\pi to get 154\pi .
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