Jawab:
1386 cm²
Penjelasan dengan langkah-langkah:
Dik :
π = 22/7
d = 42 cm
r = d : 2 = 42 cm : 2 = 21 cm
Rumus luas lingkaran = π x r x r
Luas = 22/7 x 21 cm x 21 cm
Luas = 22 x 3 cm x 21 cm
Luas = 66 cm x 21 cm
Luas = 1386 cm²
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Jawab:
1386 cm²
Penjelasan dengan langkah-langkah:
Dik :
π = 22/7
d = 42 cm
r = d : 2 = 42 cm : 2 = 21 cm
Rumus luas lingkaran = π x r x r
Luas = 22/7 x 21 cm x 21 cm
Luas = 22 x 3 cm x 21 cm
Luas = 66 cm x 21 cm
Luas = 1386 cm²