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hjlf
3 years ago
11

An engineer is planning a new water pipe installation. The circular pipe has a diameter of d=20\text{ cm}d=20 cmd, equals, 20, s

tart text, space, c, m, end text.
What is the area AAA of the circular cross section of this pipe?
Mathematics
1 answer:
Artyom0805 [142]3 years ago
6 0

Answer:

314 square cenntimeters

Step-by-step explanation:

Area of the circular cross-section of the pipe = πd²/4

Given that;

d = 20cm

Area = π(20)²/4

Area = 400π/4

Area = 100π

Area = 100(3.14)

Area = 314cm²

Hence the area of the circular cross-section of this pipe is 314 square cenntimeters

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Answer:

here ..

length=6cm

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wariber [46]

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Step-by-step explanation:

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A triangle has angle measures of 104 and 22 what is the measure of the third angle?
OverLord2011 [107]

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3 years ago
-9x-6y=15,9x-10y=145
vazorg [7]

-9x-6y=15

9x-10y=145

Find y first by eliminating the x.

Add the two equations together.

-9x+9x-6y+-10y=15+145

-6y+-10y=15+145

-6y-10y=160

-16y=160

divide both sides by -16 to get +y

-16y/-16=160/-16

y=-10

Use the substitution method to find x

-9x-6y=15

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Answer:

( 5,-10)

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4 years ago
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