1001 Watts: Reinvent Yourself, Start Today, and Discover How Women Are Lighting the World

1001 Watts: Reinvent Yourself, Start Today, and Discover How Women Are Lighting the World

Matematika ibu membuat tumpeng berbentuk kerucut dengan diameter 42 cm dan tinggi 12 cm volume nasi tumpeng Ibu adalah​

ibu membuat tumpeng berbentuk kerucut dengan diameter 42 cm dan tinggi 12 cm volume nasi tumpeng Ibu adalah​

Diketahui:

d = 42 cm

r = d/2 = 42/2 = 21 cm

t = 12 cm

Ditanya:

Volume kerucut?

Jawab:

V = 1/3Ο€r²t

V = 1/3 × 22/7 × 21 × 21 × 12

V = 1 × 22 × 3 × 7 × 12

V = 5.544 cm³

Diameter tumpeng = [tex]\tt \frac{1}{2}\times d[/tex]

                                = [tex]\tt \frac{42}{2}[/tex] cm

                                = 21 cm

Tinggi tumpeng = 12 cm

Volume nasi tumpeng = [tex]\tt \frac{1}{3}\times \pi \times r \times r\times t[/tex]

                                     = [tex]\tt \frac{1}{3}\times \frac{22}{7} \times 21 \times 21 \times 12[/tex]

                                     = [tex]\tt \frac{1}{3}\times \frac{22}{7} \times 5.292[/tex]

                                     = [tex]\tt \frac{22}{21}\times 5.292[/tex]

                                     = 5.544 cm³

Jadi, volume nasi tumpeng Ibu adalah​ 5.544 cm³

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