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vova2212 [387]
3 years ago
10

Please help!! Solving Surface area problems

Mathematics
1 answer:
nadezda [96]3 years ago
4 0

Answer:

84.8 sq in

Step-by-step explanation:

The area of the top and bottom are each 1/2(3.7 x 4) = 7.4, so they total 14.8

2 of the sides are 5 x 5 = 25, so they total 50

1 side is 5 x 4 = 20

14.8 + 50 + 20 = 84.8 sq in

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What is the velocity in inches per second of a roll that has a speed of 140 rpm and a diameter of 2.4 cm?
fgiga [73]

Answer:

The velocity in the border of the roll is 0.025 m/s.

Step-by-step explanation:

We have a roll that has an angular velocity of

\omega = 140\, rpm

The tangent velocity (of the edge of the roll) can be calculated as

V=\omega * r=\omega * D/2\\\\V=(1/2)*140\frac{1}{min}*2.4\, cm*\frac{1m}{100cm}*\frac{1min}{60s}\\\\V=0.028\,m/s

The velocity in the border of the roll is 0.025 m/s.

8 0
4 years ago
The perimeter of a rectangular field is 318 yards. If the width of the field is 74 yards, what is its length?
san4es73 [151]
318/2=159

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6 0
3 years ago
Distribute -2x\left(-10x+1\right).−2x(−10x+1)
ZanzabumX [31]
<h3>I'll teach you how to distribute −2x(−10x+1)</h3>

----------------------------------------------------

−2x(−10x+1)

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Ex. of distributive law:

a(b+c)= ab+ac

-2x(-10x)+(-2x)*1

Apply minus/plus rule:

2*10xx-2*1*x

Simplify 2*10xx-2*1*x:

2*10xx= 20x^2

2*1*x= 2x

20x^2-2x

Your Answer Is 20x^2-2x

plz mark me as brainliest if this helped :)

5 0
3 years ago
What is the formula for figuring out the area of a circle? ​
pav-90 [236]

Answer:

The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.

Step-by-step explanation:

6 0
3 years ago
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The most common injuries that can occur from sports.
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Well, there is a wide variety, actually. There could be:
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I hope this helps and have a good night! :D
5 0
3 years ago
Read 2 more answers
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