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2 years ago

The area of a circle is 3.14 square centimeters . Find the diameter

Mathematics

1 answer:

I am Lyosha [343]2 years ago

3 0

Area = PI * radius^23.14 = PI * radius^2radius^2 = PI / 3.14radius = 1Therefore, the diameter = 2

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I do draws a blueprint of a house using the scale 1 in equals 6 ft in the kitchen has a length of 24 ft what is the length of th

ikadub [295]

Answer:

Length of kitchen on blueprint = 4 in.

Step-by-step explanation:

Scale used to draw a blueprint of a house :

6 feet = 1 in.

Therefore, 1 feet = $\frac{1}{6}$ in.

If the length of kitchen = 24 feet

Then the length of kitchen on the blueprint will be

= $\frac{1}{6}\times 24$

= 4 in.

Therefore, length of kitchen on blueprint is 4 in.

8 0

2 years ago

webassign If a snowball melts so that its surface area decreases at a rate of 6 cm2/min, find the rate at which the diameter dec

drek231 [11]

Answer:

The answer is $\frac{3}{10\pi } cm/min$

Step-by-step explanation:

Assuming the snowball is a perfect sphere, then if A denotes the surface area and D the diameter then:

$A=4\pi r^{2} = 4\pi (\frac{D}{2} )^{2} =\pi D^{2}$

Differentiating wrt r we have:

$\frac{dA}{dD} =2\pi D$

We are told that $\frac{dA}{dt}= -6$ and we want to find $\frac{dD}{dt}$

By the chain rule we have:

$\frac{dA}{dD}=\frac{dA}{dt}.\frac{dt}{dD}=\frac{\frac{dA}{dt} }{\frac{dD}{dt} }$

∴ $2\pi D=-\frac{6}{\frac{dD}{dt} }$

∴ $\frac{dD}{dt}=-\frac{6}{2\pi D}$

When D=10 then

$\frac{dD}{dt} =-\frac{6}{10*2\pi } =-\frac{3}{10\pi }$

The sign (-) shows that the D is decreasing.

3 0

2 years ago

A farm is to be built in the shape of Quadrilateral ABCD, as shown below. All four sides are equal.

babunello [35]

65.52 will be the answer
Work: (10.4 * 12.6) ÷ 2

8 0

3 years ago

3x^2 + 14x<br>how do you factories this

I am Lyosha [343]

Answer:

x(3x+14)

Step-by-step explanation:

what do those terms share? they share the letter "x"

therefore we multiply x by 3x^2/x + 14x/x

3x^2/x = 3x and 14x/x = 14

8 0

2 years ago

Which of the following represents a set of integers greater than zero?. . {1, 2, 3, 4, 5}. . {1, 2, 3, …, 98, 99, 100}. . {all p

fomenos

They are all integers greater than zero but the answer that makes sense the most is all positive numbers.
I hope this helps!

3 0

2 years ago