Question

Bantu jawab pliss :(!

Tercepat dpt BA & Follow​

Answer 1

Verified answer

Jawaban:

a. 385 cm³

b. 220 cm²

c. 297 cm²

Penjelasan dengan langkah-langkah:

V = πr²t

LS = 2πrt

LP = 2πr(r + t)

..

V = 22/7 × 3,5² × 10

V = 385 cm³

..

LS = 2 × 22/7 × 3,5 × 10

LS = 220 cm²

..

LP = 2 × 22/7 × 3,5(3,5 + 10)

LP = 44/7 × 3,5(13,5)

LP = 44/7 × 47,25

LP = 297 cm²

[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at}}[/tex]

Answer 2

d = 7 cm, maka r = 7/2 cm

Volume tabung:

V = πr²t

= 22/7 x 7/2 x 7/2 x 10

= 11 x 7 x 5

= 385 cm³

Luas selimut tabung:

L = Keliling lingkaran x tinggi

= 2πrt

= 2 x 22/7 x 7/2 x 10

= 22 x 10

= 220 cm²

Luas permukaan tabung:

L = L selimut + 2 x L lingkaran alas

= 220 + 2πr²

= 220 + (2 x 22/7 x 7/2 x 7/2)

= 220 + (11 x 7)

= 220 + 77

= 297 cm²