100 Large Print Word Search Puzzles for Seniors: Brain Health Boosting that is fun and exciting

100 Large Print Word Search Puzzles for Seniors: Brain Health Boosting that is fun and exciting

Matematika Sekolah Menengah Pertama Q.
Sebuah tabung berdiameter 28 cm dengan tinggi 10 cm. Luas seluruh permukaan tabung adalah … ( π = 22/7 )​

Q.
Sebuah tabung berdiameter 28 cm dengan tinggi 10 cm. Luas seluruh permukaan tabung adalah … ( π = 22/7 )​
  • Mencari r

→ d ÷ 2

→ 28 cm ÷ 2

→ 14 cm

  • Luas permukaan

= 2πr(r + t)

[tex] \tt = 2 \times \frac{22}{7} \times 14 \times (14 + 10)[/tex]

[tex] \tt = \frac{616}{7} \times 24[/tex]

[tex] \tt = \frac{14.784}{7} [/tex]

= 2.112 cm²

[tex] \pink{\boxed{\red{\boxed{\purple{\mathfrak{\ast ~ \blue{Celia ~ Claire} ~ \ast}}}}}}[/tex]

Penyelesaian:

D=28cm

R=14cm

T=10cm

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Lp?

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Lp=2×La+K×T

Lp=2Πr²+2Πrt

Lp=2Πr(r+t)

Lp=2×22/7×14(14+10)

Lp=2×22×2(24)

Lp=44×48

Lp=2.112cm²

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[tex] \boxed{ \colorbox{black}{ \sf{ \color{lightgreen}{ answered\:by\:Duone}}}} [/tex]

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