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

= × 28 × 28

= 22 × 4 × 28

= 2.464 cm²

K = 2πr

= 2 × × 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

= × 14 × 14

= 22 × 2 × 14

= 616 cm²

K = 2πr

= 2 × × 14

= 2 × 22 × 2

= 88 cm