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3 years ago

Find the total area of a cylinder whose radius is 2 cm and height is 4 cm.

Mathematics

1 answer:

kolezko [41]3 years ago

4 0

Answer:

78.95cm^2

Step-by-step explanation:

The equation for a cylinder is rπ^2 · h

2π²·4≈78.95

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The diagonals of rhombus WXYZ intersect at point P. If WP = 12 and XP = 5, find the perimeter of the rhombus.

navik [9.2K]

Answer: 52

Use the pythagorean theorum to calculate WX, since it's a rhombus, all sides are equal, multiply by four, finished.

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3 years ago

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What type of symmetry does a regular pentagon have

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Just a regular pentagon has 5 sides. and also has 5 lines of symmetry.

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3 years ago

Which equation can be solved by using this expression?

Marat540 [252]

Answer:

The correct answer option is B. 2 = 3x + 10x^2

Step-by-step explanation:

We are to determine whether which of the given equations in the answer options can be solved using the following expression:

$x=\frac{-3 \pm\sqrt{(3)^2+4(10)(2)} }{2(10)}$

Here, $a = 10, b = 3$ and $c=-2$ .

These requirements are fulfilled by the equation 4 which is:

$12=3x+10x^2$

Rearranging it to get:

$10x^2+3x-2=0$

Substituting these values of $a,b,c$ in the quadratic formula:

$x= \frac{-b \pm \sqrt{b^2-4ac} }{2a}$

$x= \frac{-3 \pm\sqrt{(3)^2-4(10)(-2)} }{y}$

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3 years ago

A surveyor measures the lengths of the sides of a triangular plot of land. What is the measure of the angle of the triangular pl

SVEN [57.7K]

The second one is correct

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3 years ago

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1. How many degrees is x .x 41 82 20.5 o 41 О 10

Alja [10]

Answer:

Option (1)

Step-by-step explanation:

By the inscribed angle theorem inside a circle,

"Measure of an inscribed angle is half the measure of the intercepted arc"

$\frac{1}{2}$ [m(arc AB)] = m(∠ABC)

m(arc AB) = 2[m(∠ABC)]

x = 2(41°)

x = 82°

Option (1) is the correct option.

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3 years ago