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dexar [7]
3 years ago
7

Find out the area and perimeter of circle of radius 7cm

Mathematics
2 answers:
Mice21 [21]3 years ago
8 0

Answer:

Step-by-step explanation:

area of circle=πr^2

=3.14*(7)^2

=3.14*49

=153.86 cm^2

perimeter of a circle(circumference)=2πr

=2*3.14*7

=14*3.14

=43.96 cm

lutik1710 [3]3 years ago
4 0

Answer:

area =  \frac{\pi}{4}  \times  {r}^{2}  \\  =  \frac{\pi}{4}  \times  {7}^{2}  \\  =  \frac{\pi}{4}  \times 49 \\  = 38.48451000647 \: cm \: ans......

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2. Four less than six times a number is 32. Write and solve an equation.
zhenek [66]

Answer:

6x - 4 = 32. The variable (times a number) is equal to 6.

Step-by-step explanation:

So this equation is basically asking you to formulate an equation using only the words given. For this equation, let's use a variable in place of the part where it says "times a number." When a question says that phrase, that means that they are telling you to use a variable in place of a mystery number. A variable is a letter in place of a mystery number. Knowing this, let's now solve the equation. We will use the variable x in place of our mystery number.

Four less than 6 times a number: 6x - 4 _ __.

Now we can add the equal sign and the 32: 6x - 4 = 32.

We can now solve. Add 4 to both sides of the equation to cancel out the -4:

6x - 4 = 32

    <u>+4   + 4</u>

6x  =    36

Now we divide 6 into both sides of the equation to single out the x.

<u>6x = 36</u>

6      6

36/6 = 6, so:

x = 6

I hope that this helps.

8 0
2 years ago
the functions f(x) and g(x) are described using the following equation and table: f(x) = −6(1.02)x x g(x) –1 –5 0 –3 1 –1 2 1 wh
amid [387]
F(x) = -6(1.02)^x has a y-intercept at f(x) = -6(1.02)^0
f(x) = -6(1)
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f(x) has a y-intercept at (0, -6)

g(x) has a y-intercept at (0, -3)

Therefore, the y-intercept of f(x) is equal to 2 times the y-intercept of g(x).
3 0
3 years ago
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Firlakuza [10]

Answer:

C

Step-by-step explanation:

The center of the base is the center of the circle

The center of the circle is C

8 0
3 years ago
Tamika went hiking with her friends. The beginning of -1 feet. The highest elevation on hiking path is 100 feet. What is the dif
const2013 [10]

hello!

so the difference is 101 and here is why!

you want to minus -1 from 100

100 - (-1)

but because it is a double negative it will become addition

100 + 1

so the difference is 101 feet

i hope this helped :)

4 0
3 years ago
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Hwo can 28 over 3 be expressed as a decimal, plz be quick
tia_tia [17]

Answer:

0.107   i think

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3 years ago
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