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3 years ago

Find the surface area of the cone to the nearest tenth.

Mathematics

2 answers:

vfiekz [6]3 years ago

7 0

Surface area = base area + side area

= pi * 7^2 + pi * 7 * 27 = 238pi = 747.7 cm^2

leonid [27]3 years ago

3 0

So i also need closure on this question actualy taking the geometry examen rn... and i figured i had to do (pi)* 7^2 = 152.938......
soooo like this is what you gone do....
(pi) * 7^2+ (pi) *7 *27
=747.6990.....
hope this helps
THE STRUGGLE IS REAL

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You and your friends have decided to camp for a night. Your friend claims the area of his tent is 408 m2. Work out the area of h

slamgirl [31]

We know that
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therefore

the answer is
<span>the friend's statement is incorrect the area is 4.08 m</span>²

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grandymaker [24]

Answer:

Step-by-step explanation:

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2 years ago

Determine if the matrix below is invertible. Use as few calculations as possible. Justify your answer. [Start 4 By 4 Matrix 1st

Len [333]

Answer:

Yes, it is invertible

Step-by-step explanation:

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Let's use co-factor expansion to find the determinant of this 4x4 matrix, using the column that has more zeroes in it as the co-factor, so we reduce the number of determinant calculations for the obtained sub-matrices.We pick the first column for that since it has three zeros!

Then the determinant of this matrix becomes:

$4\,*Det\left[\begin{array}{ccc}1&4&6\\0&3&8\\0&0&1\end{array}\right] +0+0+0$

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3 years ago

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Answer:

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Step-by-step explanation:

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