3 years ago

When and , the value of the expression is

1 answer:

yan [13]3 years ago

4 0

I don’t understand the question do u think u can elaborate it more?

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ddd [48]

Answer:

The area of the circular cross section of the pipe is $100\pi\ cm^{2}$

Step-by-step explanation:

we know that

The area of the circle (cross section of the pipe) is equal to

$A=\pi r^{2}$

we have

$r=20/2=10\ cm$ ----> the radius is half the diameter

substitute

$A=\pi (10)^{2}$

$A=100\pi\ cm^{2}$

8 0

4 years ago

iogann1982 [59]

Area of a quarter circle = 1/4 * pi * r^2

= 1/4 * pi * 4^2 = 12.6 m to 3 sig figs.

perimeter = 4 + 4 + 1/4 * 2 pi * 4 = 14.3 to 3 sig figs.

8 0

3 years ago

Lapatulllka [165]

Answer: Since FK is half the line, and FH is the whole line 6*2= 12

so FH=12

7 0

3 years ago

andriy [413]

Answer:

Step-by-step explanation:

I did the test

4 0

3 years ago

faltersainse [42]

I don’t see a diagram ? Just numbers...

5 0

3 years ago