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3 years ago

PIZZA estimate the area of the top of a round pizza that has a diameter of 16inches.round to the nearest tenth.

2 answers:

8 0

The formula for finding the area of a circle is A = pi X radius squared

To find the radius you have to half the diameter (16 divided by 2 = 8)

Then you can square the radius (8 squared = 64)

Now you can substitute in this would be: area = pi X 64
If you use a calculator (as pi is an irrational number) the answer to one tenth would be 201.1 (201.06)
If you use simplified pi (3.14) the answer to one decimal place would be 201.0 (200.96)

AleksandrR [38]3 years ago

3 0

So, we're finding the area of a circle.
The formula for the area of a circle is: 3.14r^2.
So, take the radius, half of the diameter, 8, and square it.
8^2 = 64.
Then, take 64, and multiply it by 3.14, or simplified pi.
64 x 3.14 = 200.96
The answer is 201 inches.

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What is the solution to this equation 4x + 2 ( x + 6 ) = 36

Margaret [11]

The answer is A. x=4.

Start off by distributing the parentheses into the equation.

4x+2(x+6)=36

4x+2x+12=26

Combine like terms.

4x+2x=6x

6x+12=36

Now solve the equation as normal. Begin by subtracting 12 from both sides to isolate the variable.

6x+12=36

-12 -12

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6x = 24

Divide 6 on both sides to find x.

6x=24

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x=4

The solution to the equation is 4.

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2 years ago

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Softa [21]

Answer: The customer should buy Giana’s jewelry box.

Step-by-step explanation:

The jewelry boxes are rectangular prisms, in order to find the box that would hold the most amount of jewelry we need to find the volumes of each box.

V= l.w.h

Katherine’s box: 5x5x5= 125

Giana’s box: 10x12x2= 240

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3 years ago

How to order -14.4, -14, -14 1/5 from least to greatest

ElenaW [278]

Think of thermometer the negative degrees are the coldest so are the lowest on the vertical column

first convert -14 1/5 to decimals = -14.2

so the order is

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3 years ago

Suppose that a large mixing tank initially holds 400 gallons of water in which 70 pounds of salt have been dissolved. Pure water

Setler79 [48]

Answer:

Step-by-step explanation:

Given that a large mixing tank initially holds 400 gallons of water in which 70 pounds of salt have been dissolved. Pure water is pumped into the tank at a rate of 4 gal/min, and when the solution is well stirred, it is then pumped out at the same rate.

Let Q(t) be the quantity of salt at time t.

Q(0) = 70 pounds

Inflow of water = outflow = 4 gal/min

So resulting volume of tank at time t = 400 gallons

Rate of change of salt = inflow - outflow

= 0 - $\frac{Q(t)}{400}$