Carilah volume tabung dan luas permukaanya.... Question from @sandy323

November 2018 2 21 Report

Carilah volume tabung dan luas permukaanya

katheryn 11) volume = πr²t = $\frac{22}{7}$ ×7²×35 = 770 cm³
luas perm = 2πrt = 2× $\frac{22}{7}[\tex]×7×35 = 1.540 cm²\\12) volume = [tex] \frac{22}{7}$ ×14²×7 = 4.312 cm³
luas perm = 2× $\frac{22}{7}$ ×14×7 = 616 cm²

13) volume = $\frac{22}{7}$ ×28²× 14 = 34.496 cm³
luas perm = 2× $\frac{22}{7}$ ×28×14 = 2.464 cm²

14) volume = $\frac{22}{7}$ ×7²×90 = 13.860 cm³
luas perm = 2× $\frac{22}{7}$ ×7×90 = 3.960 cm²

1 votes Thanks 1

sandy323 makasih ya

Quichin No 14
di ket =t=90 cm dan diameter=14 cm .r=14/2=7 cm
Luas permukaan tabung =2Πr(r+t)
= 2 x 3,14x7(7+90)
= 397,72 cm²
Vol tab = luas alas +t
= Πr²+t
3,14x7²+90
= 3,14x49+90
=243,86cm³

0 votes Thanks 1

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