6. Diketahui : r = 21 cm
: π = 22/7
L : π x r²
: 22/7 x 21 x 21
7. Diketahui : r = 20 cm
: π = 3,14
: 3,14 x (20 cm)²
: 3,14 x 40 cm²
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22/7 × 21 × 21 = 1386cm
No 7). Luas Lingkaran = phi × r2
3,14 × 20 × 20 = 1256cm
Maaf kalau salah:)
6. Diketahui : r = 21 cm
: π = 22/7
L : π x r²
: 22/7 x 21 x 21
= 1386 cm
7. Diketahui : r = 20 cm
: π = 3,14
L : π x r²
: 3,14 x (20 cm)²
: 3,14 x 40 cm²
=125,6 per 4 = 314 cm
#SemogaMembantu:)
#KaloSalahSayaMohonMaaf