berapa luas juring bersudut pusat 45 derajat celsius pada lingkaran berjari jari 25 cm?
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Jawaban:
a= 45
L = 45/360 x π r²
L = 1/8 x 3,14 x 25²
L = 245,3125
Jawaban:
Luas juring = 45°/360° × 3,14 × (25)² = 245,31 cm²