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MrRa [10]
3 years ago
6

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. A circle has a diameter

of 28 centimeters. Estimate the area of the circle. Use 22 7 for π .
Mathematics
1 answer:
Over [174]3 years ago
7 0

Answer:

The area of the circle is 616\ cm^{2}

Step-by-step explanation:

we know that

The area of the circle is equal to

A=\pi r^{2}

In this problem we have

r=D/2=28/2=14\ cm ----> the radius is half the diameter

substitute

A=(22/7)(14)^{2}=616\ cm^{2}

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Step-by-step explanation:

We need to find both percentage so we can determine the increase.

Finding percentage of $10 return: 1% return

Finding percentage of $78 return: 7.8% return

To find the percent increase we do 7.8%-1.0% = 6.8%

7 0
3 years ago
Which quadratic function has the largest maximum over the set of REAL numbers?
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4 years ago
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A cube of metal weighs 1,800 g and displaces 600 mL of water when immersed into it. Find the density of the metal.
Over [174]

Answer:

B. 3 g/mL

Step-by-step explanation:

The first thing is to know the density formula:

Density is given as follows:

d = m / V

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5 0
3 years ago
Peter inherits 15.000 dollars and place money with a bank. The interest rate are 3 percent. How many money will he get after 1ye
NeTakaya
The simplest form of an interest equation is A = P(1+rt)

where A = the total amount of money at the end, P = the principal (or amount of money you started with), r = the rate in percent, and t = the time in years.

In this case, P = 15000, r = 0.03 (because 3% in decimal form is 0.03), and t = 1:

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5 0
4 years ago
X= <br> A. 115.5<br> B. 137<br> C. 180
zhuklara [117]

<u>Answer:</u>

The correct answer option is C. 180

<u>Step-by-step explanation:</u>

We are given a figure of a circle with two known angles measuring 137 degrees and 94 degrees and we are to find the value of x.

Finding x:

137 = \frac{1}{2} (\angle x + 94)

137 = \frac{1}{2} \angle x + 47

\frac{1}{2} \angle x = 137 - 47

\frac{1}{2} \angle x = 90&#10;

\angle x = 90 \times 2&# 1 0

x = 180

5 0
3 years ago
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