Tolong jawab ya!:)plis jangan asal

Tolong jawab ya!:)plis jangan asal

Jawaban:

$3 > > k =2 rpi \ 628= 2 times r times frac{22}{7} \ r = frac{628 times 7}{44} = 99.91$

$4a > > k = 2r times pi \ 77 = 2r times frac{22}{7} \ r = frac{77 times 7}{44} = 12.25 \ d = 2r = 24.5$

$4b > > k = 2r times pi \ 141.3 = 2r times 3.14 \ r = frac{141}{6.28} = 22.45 \ d = 2r = 44.9$

$4c > > k = 2r times pi \ 69.08 = 2r times 3.14 \ r = frac{69.08}{6.28} = 11 \ d = 2r = 22$

$4d > > k = pi times 2r \ 198 = frac{22}{7} times 2r \ r = frac{198 times 7}{44} = 31.5 \ d = 2r = 63$

$5 > > r : taman div r : kolam = 14 div 7 = 2 div 1$

perbandingan keliling taman dan keliling kolam adalah 2:1