bantu jawab no.10&13+cara ya yg bisa. makasi

10. r = 170/2 = 85 km
K = 2 x 3,14 x 85 = 533,8 km

13. r = 24 cm
K = 2 x 3,14 x 24 = 150,72 cm
Panjang sirkuit
= 150,72 x 20000
= 3.014.400 cm = 30,144 km

10.) r = 1/2 ×170 = 85 km

K = 2phi r
K = 2 x 3,14 x 85
= 533,8 km

13.) r = 24 cm

K = 2phi r
K = 2 x 3,14 x 24
= 150,72 cm

Panjang sirkuit
= 150,72 x 20000
= 3.014.400 cm
= 30,144 km

.kalau boleh jadikan jawaban terbaik yah.