Kak tolong dijawab dikumpulkan besok ​

Jawaban:

a. K = 169,56 cm

K = π × d

169,56 = 3,14 × d

d = 169,56 ÷ 314

d = 54 cm

r = 27 cm

b. K = 99 cm

K = π × d

99 = 22/7 × d

d = 99 ÷ 22/7

d = 99 × 7/22

d = 31,5 cm

r = 15,75 cm

c. K = 157 cm

K = π × d

157 = 3,14 × d

d = 157 ÷ 3,14

d = 50 cm

r = 25 cm

d. K = 176 cm

K = π × d

176 = 22/7 × d

d = 176 ÷ 22/7

d = 176 × 7/22

d = 56 cm

r = 28 cm