If P = 2l + 2w, the formula to find w is . If P is 30 units and l is 10 units, w is units.

Mathematics

1 answer:

Helen [10]3 years ago

4 0

Answer:

If P is 30 units and l is 10 units, w is 5 units

Step-by-step explanation:

1. Let's check the information given to resolve the question:

P = 2l + 2w

If P is 30 units and l is 10 units, w is units

2. Replacing with the values:

P = 2l + 2w

30 = 2 (10) + 2w

30 = 20 + 2w

-2w = 20 -30 (Subtracting 2w and - 30 to both sides)

-2w = - 10

2w = 10 (Multiplying by - 1 at both sides)

w = 5 (Dividing by 2 at both sides)

If P is 30 units and l is 10 units, w is 5 units

Note: Same answer than question 13938258

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Find the volume of a cylinder with a diameter of 6 inches and a height that is three times the radius. Use pi on your calculator

Virty [35]

ANSWER
$V=254.47in^3$

EXPLANATION

The volume of a cylinder is given by the formula:

$V=\pi \: {r}^{2} h$

The given cylinder has diameter 6. This means that, the radius is

$r = \frac{6}{2}$

$r = 3cm$

The is height is

$h = 3r$

$h = 3(3) = 9cm$

We substitute the values into the formula to obtain;

$V=\pi \: {3}^{2} \times 9$

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The volume is $254.47in^3$ to the nearest hundredth