Tentukan luas dan volume dari
Cara
Dik : r = 7cm
t = 6cm
Dit : L?
V?
Jawab :
L = ( π × r × r ) + ( 2 × π × r × t )
= ( 22/7 × 7 × 7 ) + ( 2 × 22/7 × 7 × 6 )
= 154 + 264
= 418cm²
V = ( π × r × r ) × t
= ( 22/7 × 7 × 7 ) × 6
= 154 × 6
= 924cm³
Jawaban
- Luas = 428cm²
- Volume = 924cm³
Jawaban:
Lp = 572 cm²
V = 924 cm³
Penjelasan dengan langkah-langkah:
Lp = 2πr(r + t)
= 2 × 22/7 × 7 cm ( 7 cm + 6 cm)
= 44 × 1 cm × 13 cm
= 44 cm × 13 cm
= 572 cm²
V = πr²t
= 22/7 × 7 cm × 7 cm × 6 cm
= 22 × 1 cm × 7 cm × 6 cm
= 22 cm × 7 cm × 6 cm
= 154 cm² × 6 cm
= 924 cm³