Question

No 13 gimana, pakai cara ya

Answer 1

Dit:L juring lingkaran = 40 cm '
R = 10cm

dit= pjg busur jaring= ...?

L= phi.r.r
= 3,14.10.10
=314 cm'

k lingkaran=phi.d
= 3,14.20
= 62.8 cm

= 20 cm'.360 derajat / 314 cm'
= 45.85 derajat

pjg juring= < AOB × KLL lingkaran/360 derajat
= 45.85 × 62,8/ 360 derajat
= b.8 cm

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