Question

1)tentukan luas lingkaran berikut!
r=14cm
r=20cm
r=35cm

Answer 1

R =14
Jawab =

=22/7 × 14×14
=22×2×14
=44×14
=616 cm


R =20
Jawab :


=3 ,14×20×20
=314×2×2
=1256 cm


R =35
Jawab :


=22/7 × 35 ×35
=22×5×35
=3520 cm

Answer 2

A.r=14cm
πr²=22/7 x (14cm)²
=616cm²
b.r=20cm
πr²=3,14 x (20cm)²
=1256cm²
c.r=35cm
πr²=22/7 x (35cm)²
=3850cm²
maaf kalau salah..,,