Tolong jawab pertanyaannya ya !!!
Jawaban Terkonfirmasi
15.
44 = 60/360 × 22/7 × D
44 = 1/6 × 22/7 × D
44 × 6 × 7/22 = D
84 = D
diameter = 84 (D)
16.
L1 = 6×6
= 36
L2 = 3,14 × 2 × 2
= 12,56
Luar rumput = 36 – 12,56 = 23,44 (B)
17.
L1 = 14 × 14
= 196
L2 = 1/2 × 22/7 × 7 × 7
= 11/7 × 49
= 11 × 7
= 77
luas yg diarsir = 196 – 77 = 119
18.
L1 = 1/2 × 3,14 × 10 × 10
= 1,57 × 100
= 157
L2 = 1/2 × 3,14 × 5 × 5
= 1,57 × 25
= 39,25
luas yg diarsir = 157 – 39,25 = 117,75 (A)
Nomor berapa saya tidak mengaerti kurang jelad gambarnya