\frac { 4 \pi ^ { 2 } \cdot 0,5 } { 2 ^ { 2 } }
Evaluate
\frac{\pi ^{2}}{2}\approx 4.934802201
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\frac{2\pi ^{2}}{2^{2}}
Multiply 4 and 0,5 to get 2.
\frac{2\pi ^{2}}{4}
Calculate 2 to the power of 2 and get 4.
\frac{1}{2}\pi ^{2}
Divide 2\pi ^{2} by 4 to get \frac{1}{2}\pi ^{2}.
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