Aromātai
\frac{63\pi }{625}\approx 0.316672539
Tohaina
Kua tāruatia ki te papatopenga
\pi \times 0.01\times 12\times \frac{84}{100}
Whakareatia te 0.1 ki te 0.1, ka 0.01.
\pi \times 0.12\times \frac{84}{100}
Whakareatia te 0.01 ki te 12, ka 0.12.
\pi \times 0.12\times \frac{21}{25}
Whakahekea te hautanga \frac{84}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.
\pi \times \frac{3}{25}\times \frac{21}{25}
Me tahuri ki tau ā-ira 0.12 ki te hautau \frac{12}{100}. Whakahekea te hautanga \frac{12}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.
\pi \times \frac{3\times 21}{25\times 25}
Me whakarea te \frac{3}{25} ki te \frac{21}{25} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.
\pi \times \frac{63}{625}
Mahia ngā whakarea i roto i te hautanga \frac{3\times 21}{25\times 25}.
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