Evaluate
14\pi \approx 43.98229715
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\pi \times 5.6+2\pi \times 2\times 2.1
Multiply 2 and 2.8 to get 5.6.
\pi \times 5.6+4\pi \times 2.1
Multiply 2 and 2 to get 4.
\pi \times 5.6+8.4\pi
Multiply 4 and 2.1 to get 8.4.
14\pi
Combine \pi \times 5.6 and 8.4\pi to get 14\pi .
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