Jawaban:
L.juring=628cm²
P.busur=31,4cm
Penjelasan dengan langkah-langkah:
L.juring=45°/360°×π×r²
=1/8×3,14×40²
=1/8×3,14×1600
=3,14×200=628cm²
P.busur=45°/360°×π×d
=1/8×3,14×80
=3,14×10=31,4cm
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Jawaban:
L.juring=628cm²
P.busur=31,4cm
Penjelasan dengan langkah-langkah:
L.juring=45°/360°×π×r²
=1/8×3,14×40²
=1/8×3,14×1600
=3,14×200=628cm²
P.busur=45°/360°×π×d
=1/8×3,14×80
=3,14×10=31,4cm