3 years ago

What formula is used to find the circumference of a circle? isn't it C = 2πr ?

Mathematics

2 answers:

cestrela7 [59]3 years ago

8 0

Yes it is area is pie r^2

Vinil7 [7]3 years ago

4 0

Yes. You are right C=2 \pi r

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A rectangle is 4 ft long and 2 ft wide. find its area in square inches.

denis-greek [22]

$\text{Area of rectangle} = \text{length} \times \text{width}\\\\~~~~~~~~~~~~~~~~~~~~~~~=4 ~\text{ft}~\times ~2 ~\text{ft}\\\\~~~~~~~~~~~~~~~~~~~~~~~=8~ \text{ft}^2\\\\~~~~~~~~~~~~~~~~~~~~~~~=1152~\text{in}^2$

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2 years ago

A machining company needs to manufacture more than 20 fixtures in a day. The company uses five identical machines to make the fi

nikklg [1K]

Answer:

A. 5x>20

Step-by-step explanation:

Because the company has to produce more than 20 fixtures you need greater than 20 and you have 5 machines time the number they produce.

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3 years ago

45^2 ÷ 78 = ????????

elena55 [62]

$\frac{(45)^2}{78}$

To solve the problem find the value of (45)^2 at first

$(45)^2=2025$ $\frac{2025}{78}=25\text{ R75}$

The answer is 25 with the remainder 75

$25\frac{75}{78}$

You can simplify the fraction to be 25/26

$25\frac{25}{26}$

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1 year ago

Best Buy is currently selling the latest model of the iPad

Nonamiya [84]

Answer:

$522.49

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549.99-27.50=$522.49

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3 years ago

Read 2 more answers

What’s the reciprocal of 7/2a 2a/7 -2a/7 7/2a -7/2a

vfiekz [6]

The reciprocal of a number (also called the multiplicative inverse) means 1/this number or (This number)^-1

So, to get the reciprocal of 7/2a, you need to divide 1 by this number as follows:
reciprocal = 1 / (7/2a) = 2a/7

The answer is : 2a/7

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3 years ago