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= 900- 706,5
= 193,5 cm2 ⬅
Lpersegi = s × s
= 30 × 30
= 900 cm2
Llingkaran = (phi)r2
= 3.14 × 15 × 15
= 47,1 × 15
= 706,5 cm2
3. Ltembereng = Ljuring- Lsegitiga
= 314 - 200
= 114 cm2 ⬅
Ljuring = SP
----- × Llingkaran
360
= 90
----- × 3,14 × 20 × 20
360
= 3,14 × 5 × 20
= 62,8 × 5
= 314 cm2
Lsegitiga = a × t
-------
2
= 20 × 20
-----------
2
= 200 cm2