Question

Bantuin ya kak aku mau ngerjain yang lain nih Y-Y​

Answer 1

Jawaban:

Luas ¼ lingkaran:

Luas = ¼πr²

Luas = ¼×3,14×10×10

Luas = ¼ × 31,4 × 10

Luas = ¼ × 314

Luas = 78,5cm³

_____________________

Volume tabung:

Volume = πr²×t

Volume = 3,14 × 12 × 12 × 30

Volume = 37,68 × 12 × 30

Volume = 452,16 × 30

Volume = 13.564,8dm³ = 13.564,8Liter

Answer 2

1. Luas Lingkaran

L = 1/4 × π × r × r

L = 1/4 × 3,14 × 10 × 10

L = 1/4 × 31,4 × 10

L = 1/4 × 314

L = 78,5 cm²

2. Berapa liter volume tabung

V = π × r × r × t

V = 3,14 × 12 × 12 × 30

V = 37,68 × 12 × 30

V = 452,16 × 30

V = 13.564,8 dm³

= 13.564,8 liter