2 years ago

H=10 cmT = 7 cmA. Calculate the volume of the cylinder

Mathematics

1 answer:

Brut [27]2 years ago

8 0

Answer:

70cm

Step-by-step explanation:

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Factorize this expression completely <br>using (a-b)² formula<br>3a²- 36a + 108

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Answer:

$3a^2 - 36a + 108 = (\sqrt{3}a - 6\sqrt{3} )^2$

Step-by-step explanation:

$3a^2 = (\sqrt{3} a)^2\\108 = 9 \times 4 \times 3= 3^2 \times 2^2 \times 3 = (3\times2 \sqrt{3} )^2 = (6\sqrt{3})^2$

$so, a = \sqrt{3} a \ , \ b = 6\sqrt{3} \\\\(a - b)^2 = a^2 -2ab + b^2\\\\-36a = -2ab\\\\-36a = -2 \times \sqrt{3} a \times 6\sqrt{3}$

Therefore ,

$3a^2 - 36a + 108 = (\sqrt{3}a )^2 - 2(\sqrt{3}a \times 6\sqrt{3} ) + (6\sqrt{3} )^2 = (\sqrt{3}a - 6\sqrt{3} )^2$

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H=10 cmT = 7 cmA. Calculate the volume of the cylinder​

H=10 cmT = 7 cmA. Calculate the volume of the cylinder