Question

Mencari luas lingkaran jika berdiameter
1. 12cm
2. 30cm
3. 40cm
4.. 64cm
5. 82cm

Answer 1

1. r=6cm
 L=π×r²
  =3,14×6²
  =113,04cm²
2. R=15cm
L=π×r²
 =3,14×15²
 =706,5cm²
3. r=20cm
L=π×r²
 =3,14×20²
 =1256cm²
4. r=32 cm
L=π×r²
 = 3,14  ×32²
 =3215,36cm²
5.r=41
L=π×r²
  =3,14×41²
 =5278,34cm²

smggga membantu :)

Answer 2

1.12cm=3,14x6x6=113,04
2.30cm=3,14x15x15=706,5
3.40cm=3,14x20x20=1256
4.64cm=3,14x32x32=3215.36
5.82cm=3,14x41x41=5278.34