Jawaban:
1) d = 28 cm
r = 28 : 2
r = 14 cm
Kll = π x d
Kll = 22/7 x 28
Kll = 22 x 4
Keliling = 88 cm
Luas = π x r x r
L = 22/7 x 14 x 14
L = 22 x 2 x 14
L = 616 cm²
2) r = 30 cm
Kll = 2 x π x r
Kll = 2 x 3,14 x 30
Keliling = 188,4 cm
L = 3,14 x 30 x 30
L = 3,14 x 900
L = 2.826 cm²
3) d = 35 cm
r = 35 : 2
r = 17,5 cm
Kll = 22/7 x 35
Kll = 22 x 5
Keliling = 110 cm
L = 22/7 x 17,5 x 17,5
L = 22/7 x 306,25
L = 22 x 43,75
L = 962,5 cm²
1. Diketahui d = 28cm
Luas phi.r kuadrat
22/7 x 14 x 14 = 616 cm
Keliling lingkaran 2 phi r
2 x 22 /7 x 14 = 88 cm
2. Diketahui jari2 30 cm
Luas lingkaran phi r kuadrat
3,14 x 30 x30 = 2826 cm
Keliling lingkaran
2 x 3,14 x 30 = 188,4 cm
3. Diketahui d 35 cm
3,14 x 17,5 x17, 5 = 961, 625 cm
2 x 3,14 x 17,5= 109,9 cm
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Jawaban:
1) d = 28 cm
r = 28 : 2
r = 14 cm
Kll = π x d
Kll = 22/7 x 28
Kll = 22 x 4
Keliling = 88 cm
Luas = π x r x r
L = 22/7 x 14 x 14
L = 22 x 2 x 14
L = 616 cm²
2) r = 30 cm
Kll = 2 x π x r
Kll = 2 x 3,14 x 30
Keliling = 188,4 cm
Luas = π x r x r
L = 3,14 x 30 x 30
L = 3,14 x 900
L = 2.826 cm²
3) d = 35 cm
r = 35 : 2
r = 17,5 cm
Kll = π x d
Kll = 22/7 x 35
Kll = 22 x 5
Keliling = 110 cm
Luas = π x r x r
L = 22/7 x 17,5 x 17,5
L = 22/7 x 306,25
L = 22 x 43,75
L = 962,5 cm²
Jawaban:
1. Diketahui d = 28cm
Luas phi.r kuadrat
22/7 x 14 x 14 = 616 cm
Keliling lingkaran 2 phi r
2 x 22 /7 x 14 = 88 cm
2. Diketahui jari2 30 cm
Luas lingkaran phi r kuadrat
3,14 x 30 x30 = 2826 cm
Keliling lingkaran
2 x 3,14 x 30 = 188,4 cm
3. Diketahui d 35 cm
Luas phi.r kuadrat
3,14 x 17,5 x17, 5 = 961, 625 cm
Keliling lingkaran 2 phi r
2 x 3,14 x 17,5= 109,9 cm
Penjelasan dengan langkah-langkah:
Semoga bermanfaat n membantu