Lingkaran jari jari 10cmberapa luas berapa keliling

Posted on

Lingkaran jari jari 10cmberapa luas berapa keliling

R = 10 cm
d = 20 cm
π = 3.14
luas = ? ( π x r² )
keliling = ? ( π x d )

luas = 3.14 x 10 cm x 10 cm
luas = 314 cm² ✓

keliling = 3.14 x 20 cm
keliling = 62.8 cm ✓

Jawab:

Keliling = 62.8 cm

Luas = 314 cm

Penjelasan dengan langkah-langkah:

keliling =

= pi x d

= 3,14 x 20 cm

= 62,8 cm

Luas =

= pi x r^{2}

= 3,14 x 10^{2} cm

= 314 cm