Tolong bantu kk mengunakan cara
Penjelasan dengan langkah-langkah:
Nomor 39.
= 4 . 7 1/2 ÷ 5
= 4 . 15/2 ÷ 5
= 60/2 ÷ 5/1
= 60/2 x 1/5
= 60/10
= 6 ✓
Nomor 40.
k = 176 cm
d = 176 ÷ 22/7
d = 176 x 7/22
d = 56 cm
r = 56/2 = 28
l = π.r²
= 22/7 . 28 . 28
= 22 . 4 . 28
= 88 . 28
= 2464 m²