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=1/8×22/7×14
=5,5 cm
L juring AOB=45/360×π×r²
=1/8×22/7×7²
=19,25 cm²
Luas juring = 1/8 Luas
K=
K= 44 (jangan lupa kali 1/8)
Panjang busur = 5,5cm
L=r^2*phi
L= 7^2*22/7
L=154 (jangan lupa kali 1/8)
Luas AOB = 19,25
(dikali 1/8 karena besar sudut 45 derajat)
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