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Mapel : Matematika
Tentang : Bangun Datar
Pertanyaan yg diajukan : 1
Pembahasan :
Diketahui :
- Diameter (d) : 70 cm
- Jari - Jari (r) : 70/2 : 35 cm
Ditanya :
- Luas (L)
Cara :
Karena bangun lingkarannya hanya setengah (½), maka rumus luas lingkaran dikali ½.
L = ½ x π x r²
L = ½ x 22/7 x 35 x 35
L = ½ x 22 x 5 x 35
L = 11 x 5 x 35
L = 55 x 35
L = 1.925 cm²
Jadi, luas lingkaran tersebut adalah 1.925 cm². Jawabanmu yg A
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Verified answer
luas 1/2 lingkaran = 1/2 x 22/7 x 35cm x 35cm= 1/2 x 110 cm x 35cm
= 55 cm x 35 cm
= 1. 925 cm²
jadi hasilnya A. 1.925 cm²
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