Jawab:
Luas alas = luas segitiga = (5 . 3)/2 = 4 cm²
sisi miring segitiga alas = √(5²+3²) = √34
keliling alas segitiga = sisi + sisi + sisi = 5 + 3 + √34 = 13,83 cm
Volume prisma
= Luas alas * tinggi
= 4 cm² . 9 cm
= 36 cm³
Luas permukaan prisma
= (2 . Luas alas) + (Keliling alas . tinggi)
= ( 2 . 4 cm²) + ( 13,83 cm . 9 cm )
= 8 + 124,47
= 132,47 cm²
Volume tabung
= π . r . r . t
= 3,14 * 30 . 30 . 100
= 282600 cm³
Luas permukaan tabung
= 2 . π . r . ( r + t )
= 2 . 3,14 . 30 . (30+100)
= 24492 cm²
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Jawab:
Luas alas = luas segitiga = (5 . 3)/2 = 4 cm²
sisi miring segitiga alas = √(5²+3²) = √34
keliling alas segitiga = sisi + sisi + sisi = 5 + 3 + √34 = 13,83 cm
Volume prisma
= Luas alas * tinggi
= 4 cm² . 9 cm
= 36 cm³
Luas permukaan prisma
= (2 . Luas alas) + (Keliling alas . tinggi)
= ( 2 . 4 cm²) + ( 13,83 cm . 9 cm )
= 8 + 124,47
= 132,47 cm²
Volume tabung
= π . r . r . t
= 3,14 * 30 . 30 . 100
= 282600 cm³
Luas permukaan tabung
= 2 . π . r . ( r + t )
= 2 . 3,14 . 30 . (30+100)
= 24492 cm²