ada yang bisa mapel mtk kls 8, keliling lingkaran
Jawaban:
ini caranya beserta jawabanya ya
A. L = π × r²
= 3,14 × 20²
= 3,14 × 400
= 1.256 cm²
K = 2πr
= 2 × 3,14 × 20
= 125,6 cm
———————
B. L = π × r²
= [tex] \frac{22}{7} [/tex] × 28 × 28
= 22 × 4 × 28
= 2.464 cm²
K = 2πr
= 2 × [tex] \frac{22}{7} [/tex] × 28
= 22 × 4
= 88 cm
———————
C. L = ¼ × π × d²
= ¼ × 3,14 × 10²
= ¼ × 3,14 × 100
= ¼ × 314
= 78,5 cm²
K = πd
= 3,14 × 10
= 31,4 cm
———————
D. L = π × r²
= [tex] \frac{22}{7} [/tex]× 14 × 14
= 22 × 2 × 14
= 616 cm²
K = 2πr
= 2 × [tex] \frac{22}{7} [/tex]× 14
= 2 × 22 × 2
= 88 cm
[answer.2.content]