$$\frac{45}{360}{8}\times2\times3.14\times16^{2}$$
$1607.68$
$$\frac{1}{8}\times 8\times 2\times 3.14\times 16^{2}$$
$$2\times 3.14\times 16^{2}$$
$$6.28\times 16^{2}$$
$$6.28\times 256$$
$$1607.68$$
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$\frac{157 \cdot 2 ^ {8}}{5 ^ {2}} = 1607\frac{17}{25} = 1607.68$
