Pliss besok dikumpul

Penjelasan dengan langkah-langkah:

1. Diketahui

r = 3,5 cm

t = 10 cm

V = 1/3 × phi × r² × t

= 1/3 × 22/7 × 3,5² × 10

= 128,3cm³

2. Diketahui

Luas alas = 15 cm²

t = 16 cm

V = luas alas × tinggi

= 15 × 16

= 240 cm³

3. Diketahui

d = 14 dm

t = 9 dm

V = 1/3 × phi × r² × t

= 1/3 × phi × (1/2d)² × t

= 1/3 × phi × 1/4 d² × t

= 1/12 × phi × d² × t

= 1/12 × 22/7 × 14² × 9

= 462 dm³

Jawaban:

1.128,3 cm³

2.80cm³

3.462dm³

Penjelasan dengan langkah-langkah:

1.jari jari alas=r=3,5

tinggi=t=10

v=1/3×π×r²×t

=1/3×(22/7)×3,5²×10

=1/3×(22/7)×12,25×10

=2.695/21

=128,3

2.L=π×r²

15=π×r²

r²=15/π

r=√15/(22/7)

r=√4,8

r=2,19

v=1/3×π×r²×t

=1/3×La×16

=1/3×15×16

=80

3.r=d÷2=14÷2=7

t=9

v=1/3(22/7)×r²×t

=1/3×(22/7)×7²×9

=1/3×(22/7)×49×9

=9.702/21

=462