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NISA [10]
3 years ago
9

The area of a circle is 25in^2. What is the circumference, in inches? Express your

Mathematics
1 answer:
mr_godi [17]3 years ago
7 0

Answer:

c = 10 \sqrt{\pi}

Step-by-step explanation:

A = pi*r^2

We first plug in 25 for A

25 = pi * r^2

Solve

r =  \sqrt{ \frac{25}{\pi} }

We can then plug in r for circumference formula

C = 2pi * r

c = 2\pi \sqrt{ \frac{25}{\pi} }

c = 10 \sqrt{\pi}

or 17.72

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Of the 20 students in Emily's class 15 like chocolate cake and the rest like cheesecake how many like cheesecake and what percen
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(B)  

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A bolt has 6 1/2 turns per inch. How many turns would be in 2 1/2 inches of threads?
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Given, number of turns a bolt has = 16 1/2 turns per inch.

per inch bolt turns = 16 1/2 =33/2

how many turns would be there in 2 1/2 inches of threads = ?

Threads Per Inch, or TPI, is a measure of how many threads are found in one inch along a fastener's length. American fasteners are the only ones that employ TPI. Typically, the thread count is higher for smaller fasteners since they have finer threads. Just as the name implies, the Threads Per Inch (TPI) refers to the number of threads that run the length of a screw for one inch. The TPI of a screw can be easily calculated by simply counting the threads and dividing the total length.

so, 5/2 inches bolt turns =33/2 x 5/2

=165/4

hence 41 1/4 turns

Therefore, 2 1/2 inches of threads have 41 1/2 turns.

Learn more about Conversions here:

brainly.com/question/16851332

#SPJ1

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