jawab no 25 pakai cara yh

luas lingkaran
[tex]\pi {r}^{2} [/tex]
[tex]3.14 \times {5}^{2} [/tex]
[tex]3.14 \times 5cm \times 5cm[/tex]
[tex]78.5cm (c)[/tex]

L=πr²
=3,14(5²)
=3,14(25)
=78,5 cm²

semoga membantu........