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3 years ago

The surface area of a cylinder

1 answer:

7 0

The formula for the surface area of a cylinder is $\pi r (r + h)$ , where r stands for the radius of the base of the cylinder, and h stands for the cylinder's height.

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3 years ago

HELP PLEASE!

olasank [31]

Answer

Find out the Area of a triangle .

To proof

Formula

Area of Triangle

$= \frac{1}{2}\times( {x_1(y_{2}-y_{3}) +x_{2}(y_{3} - y_{1})+x_{3}(y_{1}-y_{2})})$

Now vertices are D(3, 3) , E(3, −1) , and F(−2, −5) .

$= \frac{1}{2} (3\times(-1 +5) + 3\times(-5-3)-2\times(3+1))$

Solving the above

$= \frac{1}{2}(3\times4+3\times-8 -2\times4)$

$=\frac{1}{2} (12-24-8)\\ =\frac{1}{2} (-32+12)\\=\frac{1}{2} (-20)$

= -10 units²

(Neglected the negative sign as area cannot be negative.)

= 10 units ²

Area of a triangle is 10 units ²

Hence proved

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3 years ago

HELP!! 100 POINTS!!

NNADVOKAT [17]

Answer:

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Step-by-step explanation:

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3 years ago

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Identify the two remote interior angles that correspond to angle 4.

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Answer:

1 & 2

Step-by-step explanation:

Remote interior angles are the angles inside of a triangle but not on the same straight line as the exterior angle (4)

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3 years ago

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