Jawab:
L.lingkaran
= 3/4 . π . r²
= 3/4 . 22/7 .14 .14
= 3/2 . 11 . 2 . 14
= 3 . 11 . 2 . 7
= 462
L.setengah bangun lingkaran
= 1/2 . 462
= 231 cm²
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Jawab:
L.lingkaran
= 3/4 . π . r²
= 3/4 . 22/7 .14 .14
= 3/2 . 11 . 2 . 14
= 3 . 11 . 2 . 7
= 462
L.setengah bangun lingkaran
= 1/2 . 462
= 231 cm²