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Verified answer
R = 10 cmsudut pusat = 72 derajat
L juring = (sudut pusat/360 derajat) x luas lingkaran
sebelumnya kita harus mencari luas lingkaran, yaitu :
L lingkaran = phi x r^2
= 3,14 x 10^2
= 3,14 x 100
= 314 cm^2
L juring = (72/360) x 314
= 0,2 x 314
= 62,8 cm^2
semoga membantu:)
=Phi x r²
=3,14 x 10x 10
=314
L.juring
=besar sudut/360 x luas lingkaran
=72/360 x 314
=0,2 x 314
=62,8cm²